leetcode-cn.com Website Information
Daily Unique Visits: 28,206
Daily Page Views: 169,236
Income Per Day: $338
Estimated Value: $243,360
leetcode-cn.com is registered under .COM top-level domain. Please check other sites in .COM zone.
No name server records were found.
and is probably hosted by CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN. See the full list of other websites hosted by CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN.
The highest website leetcode-cn.com position in Alexa rank database was 388 and the lowest rank position was 975964. Current position of leetcode-cn.com in Alexa rank database is 50848.
Desktop speed score of leetcode-cn.com (64/100) is better than the results of 41.34% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of leetcode-cn.com (97/100) is better than the results of 49.9% of other sites and means that the page is mobile-friendly.
Mobile speed score of leetcode-cn.com (49/100) is better than the results of 31.99% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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leetcode-cn.com Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
leetcode-cn.com whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
Domain Name: LEETCODE-CN.COM
Registry Domain ID: 2185860179_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2024-04-01T07:58:52Z
Creation Date: 2017-11-11T05:34:14Z
Registry Expiry Date: 2024-11-11T05:34:14Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: ok https://icann.org/epp#ok
Name Server: DNS10.HICHINA.COM
Name Server: DNS9.HICHINA.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-06-05T20:46:14Z
Registry Domain ID: 2185860179_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2024-04-01T07:58:52Z
Creation Date: 2017-11-11T05:34:14Z
Registry Expiry Date: 2024-11-11T05:34:14Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: ok https://icann.org/epp#ok
Name Server: DNS10.HICHINA.COM
Name Server: DNS9.HICHINA.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-06-05T20:46:14Z
leetcode-cn.com server information
Servers Location
leetcode-cn.com desktop page speed rank
Last tested: 2018-06-23
Desktop Speed
Bad
64/100
leetcode-cn.com Desktop Speed Test Quick Summary
priority - 20Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://leetcode-cn.com/graphql (expiration not specified)
https://leetcode-cn.com/static/CACHE/css/5fac1437e66d.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/css/6a4c3865578d.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/css/b3cd30803e87.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/4428496449a3.js (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/552cba795668.js (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/eb02df0bc0e3.js (expiration not specified)
https://leetcode-cn.com/static/angular/angular.min.js (expiration not specified)
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.css (expiration not specified)
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.js (expiration not specified)
https://leetcode-cn.com/static/clipboard/dist/clipboard.min.js (expiration not specified)
https://leetcode-cn.com/static/font-awesome/css/font-awesome.min.css (expiration not specified)
https://leetcode-cn.com/static/images/LeetCode_Playground.png (expiration not specified)
https://leetcode-cn.com/static/images/LeetCode_logo_rvs.png (expiration not specified)
https://leetcode-cn.com/static/images/beian.png (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/java.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/kotlin.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/python.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/shanghai.png (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/swift.svg (expiration not specified)
https://leetcode-cn.com/static/images/playground/temp_binary-tree.jpg (expiration not specified)
https://leetcode-cn.com/static/images/playground/temp_linked-list.jpg (expiration not specified)
https://leetcode-cn.com/static/images/region/cn.svg (expiration not specified)
https://leetcode-cn.com/static/jquery-sticky/jquery.sticky.js (expiration not specified)
https://leetcode-cn.com/static/jquery-ui-dist/jquery-ui.min.js (expiration not specified)
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.css (expiration not specified)
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.js (expiration not specified)
https://leetcode-cn.com/static/noty/lib/noty.min.js (expiration not specified)
https://leetcode-cn.com/static/sweetalert2/dist/sweetalert2.min.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/app…page/index.01134ac6.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/app…tion/index.88a4ae6d.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/common/libraries.601205d9.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/common/vendor.4bc3e401.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/fon…ound_Bold.4391ba69.otf (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/fon…und_Light.d737fd73.otf (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/ima…tCode_nav.4d940ca7.png (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/loc…Hans/index.3798bae8.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/manifest.93b28ee9.js (expiration not specified)
https://g.alicdn.com/sd/ncpc/nc.css?t=201806230147 (60 minutes)
https://g.alicdn.com/sd/ncpc/nc.js?t=201806230147 (60 minutes)
https://js-agent.newrelic.com/nr-1071.min.js (2 hours)
https://leetcode-cn.com/static/CACHE/css/5fac1437e66d.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/css/6a4c3865578d.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/css/b3cd30803e87.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/4428496449a3.js (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/552cba795668.js (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/eb02df0bc0e3.js (expiration not specified)
https://leetcode-cn.com/static/angular/angular.min.js (expiration not specified)
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.css (expiration not specified)
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.js (expiration not specified)
https://leetcode-cn.com/static/clipboard/dist/clipboard.min.js (expiration not specified)
https://leetcode-cn.com/static/font-awesome/css/font-awesome.min.css (expiration not specified)
https://leetcode-cn.com/static/images/LeetCode_Playground.png (expiration not specified)
https://leetcode-cn.com/static/images/LeetCode_logo_rvs.png (expiration not specified)
https://leetcode-cn.com/static/images/beian.png (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/java.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/kotlin.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/python.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/shanghai.png (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/swift.svg (expiration not specified)
https://leetcode-cn.com/static/images/playground/temp_binary-tree.jpg (expiration not specified)
https://leetcode-cn.com/static/images/playground/temp_linked-list.jpg (expiration not specified)
https://leetcode-cn.com/static/images/region/cn.svg (expiration not specified)
https://leetcode-cn.com/static/jquery-sticky/jquery.sticky.js (expiration not specified)
https://leetcode-cn.com/static/jquery-ui-dist/jquery-ui.min.js (expiration not specified)
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.css (expiration not specified)
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.js (expiration not specified)
https://leetcode-cn.com/static/noty/lib/noty.min.js (expiration not specified)
https://leetcode-cn.com/static/sweetalert2/dist/sweetalert2.min.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/app…page/index.01134ac6.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/app…tion/index.88a4ae6d.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/common/libraries.601205d9.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/common/vendor.4bc3e401.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/fon…ound_Bold.4391ba69.otf (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/fon…und_Light.d737fd73.otf (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/ima…tCode_nav.4d940ca7.png (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/loc…Hans/index.3798bae8.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/manifest.93b28ee9.js (expiration not specified)
https://g.alicdn.com/sd/ncpc/nc.css?t=201806230147 (60 minutes)
https://g.alicdn.com/sd/ncpc/nc.js?t=201806230147 (60 minutes)
https://js-agent.newrelic.com/nr-1071.min.js (2 hours)
priority - 20Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 193KiB (83% reduction).
Compressing https://leetcode-cn.com/static/images/playground/temp_binary-tree.jpg could save 58.6KiB (90% reduction).
Compressing https://leetcode-cn.com/static/images/playground/temp_linked-list.jpg could save 55.6KiB (89% reduction).
Compressing and resizing https://leetcode-cn.com/static/images/LeetCode_logo_rvs.png could save 36.1KiB (97% reduction).
Compressing https://leetcode-cn.com/static/images/beian.png could save 17.4KiB (92% reduction).
Compressing and resizing https://leetcode-cn.com/static/images/landing_page/shanghai.png could save 13.4KiB (95% reduction).
Compressing https://leetcode-cn.com/static/webpack_bundles/ima…tCode_nav.4d940ca7.png could save 6.2KiB (37% reduction).
Compressing https://leetcode-cn.com/static/images/LeetCode_Playground.png could save 5.7KiB (35% reduction).
Compressing https://leetcode-cn.com/static/images/playground/temp_linked-list.jpg could save 55.6KiB (89% reduction).
Compressing and resizing https://leetcode-cn.com/static/images/LeetCode_logo_rvs.png could save 36.1KiB (97% reduction).
Compressing https://leetcode-cn.com/static/images/beian.png could save 17.4KiB (92% reduction).
Compressing and resizing https://leetcode-cn.com/static/images/landing_page/shanghai.png could save 13.4KiB (95% reduction).
Compressing https://leetcode-cn.com/static/webpack_bundles/ima…tCode_nav.4d940ca7.png could save 6.2KiB (37% reduction).
Compressing https://leetcode-cn.com/static/images/LeetCode_Playground.png could save 5.7KiB (35% reduction).
priority - 16Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 20 blocking script resources and 8 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.js
https://g.alicdn.com/sd/ncpc/nc.js?t=201806230147
https://leetcode-cn.com/static/CACHE/js/552cba795668.js
https://leetcode-cn.com/static/jquery/dist/jquery.min.js?v=3.3.1
https://leetcode-cn.com/static/jquery-sticky/jquery.sticky.js
https://leetcode-cn.com/static/clipboard/dist/clipboard.min.js
https://leetcode-cn.com/static/sweetalert2/dist/sweetalert2.min.js
https://leetcode-cn.com/static/angular/angular.min.js
https://leetcode-cn.com/static/jquery-ui-dist/jquery-ui.min.js
https://leetcode-cn.com/static/noty/lib/noty.min.js
https://leetcode-cn.com/static/bootstrap/dist/js/bootstrap.min.js?v=3.3.7
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.js
https://leetcode-cn.com/static/CACHE/js/4428496449a3.js
https://leetcode-cn.com/static/webpack_bundles/manifest.93b28ee9.js
https://leetcode-cn.com/static/webpack_bundles/common/vendor.4bc3e401.js
https://leetcode-cn.com/static/webpack_bundles/common/libraries.601205d9.js
https://leetcode-cn.com/static/webpack_bundles/loc…Hans/index.3798bae8.js
https://leetcode-cn.com/static/webpack_bundles/app…tion/index.88a4ae6d.js
https://leetcode-cn.com/static/CACHE/js/eb02df0bc0e3.js
https://leetcode-cn.com/static/webpack_bundles/app…page/index.01134ac6.js
https://g.alicdn.com/sd/ncpc/nc.js?t=201806230147
https://leetcode-cn.com/static/CACHE/js/552cba795668.js
https://leetcode-cn.com/static/jquery/dist/jquery.min.js?v=3.3.1
https://leetcode-cn.com/static/jquery-sticky/jquery.sticky.js
https://leetcode-cn.com/static/clipboard/dist/clipboard.min.js
https://leetcode-cn.com/static/sweetalert2/dist/sweetalert2.min.js
https://leetcode-cn.com/static/angular/angular.min.js
https://leetcode-cn.com/static/jquery-ui-dist/jquery-ui.min.js
https://leetcode-cn.com/static/noty/lib/noty.min.js
https://leetcode-cn.com/static/bootstrap/dist/js/bootstrap.min.js?v=3.3.7
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.js
https://leetcode-cn.com/static/CACHE/js/4428496449a3.js
https://leetcode-cn.com/static/webpack_bundles/manifest.93b28ee9.js
https://leetcode-cn.com/static/webpack_bundles/common/vendor.4bc3e401.js
https://leetcode-cn.com/static/webpack_bundles/common/libraries.601205d9.js
https://leetcode-cn.com/static/webpack_bundles/loc…Hans/index.3798bae8.js
https://leetcode-cn.com/static/webpack_bundles/app…tion/index.88a4ae6d.js
https://leetcode-cn.com/static/CACHE/js/eb02df0bc0e3.js
https://leetcode-cn.com/static/webpack_bundles/app…page/index.01134ac6.js
Optimize CSS Delivery of the following:
https://leetcode-cn.com/static/bootstrap/dist/css/bootstrap.min.css?v=3.3.7
https://leetcode-cn.com/static/font-awesome/css/font-awesome.min.css
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.css
https://leetcode-cn.com/static/CACHE/css/5fac1437e66d.css
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.css
https://g.alicdn.com/sd/ncpc/nc.css?t=201806230147
https://leetcode-cn.com/static/CACHE/css/6a4c3865578d.css
https://leetcode-cn.com/static/CACHE/css/b3cd30803e87.css
https://leetcode-cn.com/static/font-awesome/css/font-awesome.min.css
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.css
https://leetcode-cn.com/static/CACHE/css/5fac1437e66d.css
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.css
https://g.alicdn.com/sd/ncpc/nc.css?t=201806230147
https://leetcode-cn.com/static/CACHE/css/6a4c3865578d.css
https://leetcode-cn.com/static/CACHE/css/b3cd30803e87.css
priority - 2Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
None of the final above-the-fold content could be rendered even with the full HTML response.
priority - 0Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 3.3KiB (49% reduction).
Compressing https://leetcode-cn.com/static/images/region/cn.svg could save 861B (49% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/java.svg could save 747B (45% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/python.svg could save 712B (54% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/kotlin.svg could save 566B (52% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/swift.svg could save 446B (42% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/java.svg could save 747B (45% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/python.svg could save 712B (54% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/kotlin.svg could save 566B (52% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/swift.svg could save 446B (42% reduction).
priority - 0Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 862B (34% reduction).
Minifying https://leetcode-cn.com/static/jquery-sticky/jquery.sticky.js could save 862B (34% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 717B (11% reduction).
Minifying https://leetcode-cn.com/ could save 717B (11% reduction) after compression.
leetcode-cn.com Desktop Resource Breakdown
| Total Resources | 52 |
| Number of Hosts | 5 |
| Static Resources | 42 |
| JavaScript Resources | 25 |
| CSS Resources | 8 |
leetcode-cn.com mobile page speed rank
Last tested: 2018-06-23
Mobile Speed
Bad
49/100
leetcode-cn.com Mobile Speed Test Quick Summary
priority - 64Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 20 blocking script resources and 8 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.js
https://g.alicdn.com/sd/ncpc/nc.js?t=201806230147
https://leetcode-cn.com/static/CACHE/js/552cba795668.js
https://leetcode-cn.com/static/jquery/dist/jquery.min.js?v=3.3.1
https://leetcode-cn.com/static/jquery-sticky/jquery.sticky.js
https://leetcode-cn.com/static/clipboard/dist/clipboard.min.js
https://leetcode-cn.com/static/sweetalert2/dist/sweetalert2.min.js
https://leetcode-cn.com/static/angular/angular.min.js
https://leetcode-cn.com/static/jquery-ui-dist/jquery-ui.min.js
https://leetcode-cn.com/static/noty/lib/noty.min.js
https://leetcode-cn.com/static/bootstrap/dist/js/bootstrap.min.js?v=3.3.7
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.js
https://leetcode-cn.com/static/CACHE/js/4428496449a3.js
https://leetcode-cn.com/static/webpack_bundles/manifest.93b28ee9.js
https://leetcode-cn.com/static/webpack_bundles/common/vendor.4bc3e401.js
https://leetcode-cn.com/static/webpack_bundles/common/libraries.601205d9.js
https://leetcode-cn.com/static/webpack_bundles/loc…Hans/index.3798bae8.js
https://leetcode-cn.com/static/webpack_bundles/app…tion/index.88a4ae6d.js
https://leetcode-cn.com/static/CACHE/js/eb02df0bc0e3.js
https://leetcode-cn.com/static/webpack_bundles/app…page/index.01134ac6.js
https://g.alicdn.com/sd/ncpc/nc.js?t=201806230147
https://leetcode-cn.com/static/CACHE/js/552cba795668.js
https://leetcode-cn.com/static/jquery/dist/jquery.min.js?v=3.3.1
https://leetcode-cn.com/static/jquery-sticky/jquery.sticky.js
https://leetcode-cn.com/static/clipboard/dist/clipboard.min.js
https://leetcode-cn.com/static/sweetalert2/dist/sweetalert2.min.js
https://leetcode-cn.com/static/angular/angular.min.js
https://leetcode-cn.com/static/jquery-ui-dist/jquery-ui.min.js
https://leetcode-cn.com/static/noty/lib/noty.min.js
https://leetcode-cn.com/static/bootstrap/dist/js/bootstrap.min.js?v=3.3.7
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.js
https://leetcode-cn.com/static/CACHE/js/4428496449a3.js
https://leetcode-cn.com/static/webpack_bundles/manifest.93b28ee9.js
https://leetcode-cn.com/static/webpack_bundles/common/vendor.4bc3e401.js
https://leetcode-cn.com/static/webpack_bundles/common/libraries.601205d9.js
https://leetcode-cn.com/static/webpack_bundles/loc…Hans/index.3798bae8.js
https://leetcode-cn.com/static/webpack_bundles/app…tion/index.88a4ae6d.js
https://leetcode-cn.com/static/CACHE/js/eb02df0bc0e3.js
https://leetcode-cn.com/static/webpack_bundles/app…page/index.01134ac6.js
Optimize CSS Delivery of the following:
https://leetcode-cn.com/static/bootstrap/dist/css/bootstrap.min.css?v=3.3.7
https://leetcode-cn.com/static/font-awesome/css/font-awesome.min.css
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.css
https://leetcode-cn.com/static/CACHE/css/5fac1437e66d.css
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.css
https://g.alicdn.com/sd/ncpc/nc.css?t=201806230147
https://leetcode-cn.com/static/CACHE/css/6a4c3865578d.css
https://leetcode-cn.com/static/CACHE/css/b3cd30803e87.css
https://leetcode-cn.com/static/font-awesome/css/font-awesome.min.css
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.css
https://leetcode-cn.com/static/CACHE/css/5fac1437e66d.css
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.css
https://g.alicdn.com/sd/ncpc/nc.css?t=201806230147
https://leetcode-cn.com/static/CACHE/css/6a4c3865578d.css
https://leetcode-cn.com/static/CACHE/css/b3cd30803e87.css
priority - 30Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://leetcode-cn.com/graphql (expiration not specified)
https://leetcode-cn.com/static/CACHE/css/5fac1437e66d.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/css/6a4c3865578d.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/css/b3cd30803e87.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/4428496449a3.js (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/552cba795668.js (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/eb02df0bc0e3.js (expiration not specified)
https://leetcode-cn.com/static/angular/angular.min.js (expiration not specified)
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.css (expiration not specified)
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.js (expiration not specified)
https://leetcode-cn.com/static/clipboard/dist/clipboard.min.js (expiration not specified)
https://leetcode-cn.com/static/font-awesome/css/font-awesome.min.css (expiration not specified)
https://leetcode-cn.com/static/images/LeetCode_Playground.png (expiration not specified)
https://leetcode-cn.com/static/images/LeetCode_logo_rvs.png (expiration not specified)
https://leetcode-cn.com/static/images/beian.png (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/java.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/kotlin.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/python.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/shanghai.png (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/swift.svg (expiration not specified)
https://leetcode-cn.com/static/images/playground/temp_binary-tree.jpg (expiration not specified)
https://leetcode-cn.com/static/images/region/cn.svg (expiration not specified)
https://leetcode-cn.com/static/jquery-sticky/jquery.sticky.js (expiration not specified)
https://leetcode-cn.com/static/jquery-ui-dist/jquery-ui.min.js (expiration not specified)
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.css (expiration not specified)
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.js (expiration not specified)
https://leetcode-cn.com/static/noty/lib/noty.min.js (expiration not specified)
https://leetcode-cn.com/static/sweetalert2/dist/sweetalert2.min.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/app…page/index.01134ac6.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/app…tion/index.88a4ae6d.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/common/libraries.601205d9.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/common/vendor.4bc3e401.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/fon…ound_Bold.4391ba69.otf (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/fon…und_Light.d737fd73.otf (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/ima…tCode_nav.4d940ca7.png (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/loc…Hans/index.3798bae8.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/manifest.93b28ee9.js (expiration not specified)
https://g.alicdn.com/sd/ncpc/nc.css?t=201806230147 (60 minutes)
https://g.alicdn.com/sd/ncpc/nc.js?t=201806230147 (60 minutes)
https://js-agent.newrelic.com/nr-1071.min.js (2 hours)
https://leetcode-cn.com/static/CACHE/css/5fac1437e66d.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/css/6a4c3865578d.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/css/b3cd30803e87.css (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/4428496449a3.js (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/552cba795668.js (expiration not specified)
https://leetcode-cn.com/static/CACHE/js/eb02df0bc0e3.js (expiration not specified)
https://leetcode-cn.com/static/angular/angular.min.js (expiration not specified)
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.css (expiration not specified)
https://leetcode-cn.com/static/bootstrap-table/dist/bootstrap-table.min.js (expiration not specified)
https://leetcode-cn.com/static/clipboard/dist/clipboard.min.js (expiration not specified)
https://leetcode-cn.com/static/font-awesome/css/font-awesome.min.css (expiration not specified)
https://leetcode-cn.com/static/images/LeetCode_Playground.png (expiration not specified)
https://leetcode-cn.com/static/images/LeetCode_logo_rvs.png (expiration not specified)
https://leetcode-cn.com/static/images/beian.png (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/java.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/kotlin.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/python.svg (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/shanghai.png (expiration not specified)
https://leetcode-cn.com/static/images/landing_page/swift.svg (expiration not specified)
https://leetcode-cn.com/static/images/playground/temp_binary-tree.jpg (expiration not specified)
https://leetcode-cn.com/static/images/region/cn.svg (expiration not specified)
https://leetcode-cn.com/static/jquery-sticky/jquery.sticky.js (expiration not specified)
https://leetcode-cn.com/static/jquery-ui-dist/jquery-ui.min.js (expiration not specified)
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.css (expiration not specified)
https://leetcode-cn.com/static/needPopup/dist/needsharebutton.min.js (expiration not specified)
https://leetcode-cn.com/static/noty/lib/noty.min.js (expiration not specified)
https://leetcode-cn.com/static/sweetalert2/dist/sweetalert2.min.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/app…page/index.01134ac6.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/app…tion/index.88a4ae6d.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/common/libraries.601205d9.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/common/vendor.4bc3e401.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/fon…ound_Bold.4391ba69.otf (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/fon…und_Light.d737fd73.otf (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/ima…tCode_nav.4d940ca7.png (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/loc…Hans/index.3798bae8.js (expiration not specified)
https://leetcode-cn.com/static/webpack_bundles/manifest.93b28ee9.js (expiration not specified)
https://g.alicdn.com/sd/ncpc/nc.css?t=201806230147 (60 minutes)
https://g.alicdn.com/sd/ncpc/nc.js?t=201806230147 (60 minutes)
https://js-agent.newrelic.com/nr-1071.min.js (2 hours)
priority - 12Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 114.8KiB (68% reduction).
Compressing https://leetcode-cn.com/static/images/playground/temp_binary-tree.jpg could save 58.6KiB (90% reduction).
Compressing https://leetcode-cn.com/static/images/beian.png could save 17.4KiB (92% reduction).
Compressing https://leetcode-cn.com/static/images/LeetCode_logo_rvs.png could save 13.6KiB (37% reduction).
Compressing and resizing https://leetcode-cn.com/static/images/landing_page/shanghai.png could save 13.4KiB (95% reduction).
Compressing https://leetcode-cn.com/static/webpack_bundles/ima…tCode_nav.4d940ca7.png could save 6.2KiB (37% reduction).
Compressing https://leetcode-cn.com/static/images/LeetCode_Playground.png could save 5.7KiB (35% reduction).
Compressing https://leetcode-cn.com/static/images/beian.png could save 17.4KiB (92% reduction).
Compressing https://leetcode-cn.com/static/images/LeetCode_logo_rvs.png could save 13.6KiB (37% reduction).
Compressing and resizing https://leetcode-cn.com/static/images/landing_page/shanghai.png could save 13.4KiB (95% reduction).
Compressing https://leetcode-cn.com/static/webpack_bundles/ima…tCode_nav.4d940ca7.png could save 6.2KiB (37% reduction).
Compressing https://leetcode-cn.com/static/images/LeetCode_Playground.png could save 5.7KiB (35% reduction).
priority - 8Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
None of the final above-the-fold content could be rendered even with the full HTML response.
priority - 0Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 3.3KiB (49% reduction).
Compressing https://leetcode-cn.com/static/images/region/cn.svg could save 861B (49% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/java.svg could save 747B (45% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/python.svg could save 712B (54% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/kotlin.svg could save 566B (52% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/swift.svg could save 446B (42% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/java.svg could save 747B (45% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/python.svg could save 712B (54% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/kotlin.svg could save 566B (52% reduction).
Compressing https://leetcode-cn.com/static/images/landing_page/swift.svg could save 446B (42% reduction).
priority - 0Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 862B (34% reduction).
Minifying https://leetcode-cn.com/static/jquery-sticky/jquery.sticky.js could save 862B (34% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 716B (11% reduction).
Minifying https://leetcode-cn.com/ could save 716B (11% reduction) after compression.
leetcode-cn.com Mobile Resource Breakdown
| Total Resources | 51 |
| Number of Hosts | 5 |
| Static Resources | 41 |
| JavaScript Resources | 25 |
| CSS Resources | 8 |
leetcode-cn.com mobile page usability
Last tested: 2018-06-23
Mobile Usability
Good
97/100
leetcode-cn.com Mobile Usability Test Quick Summary
priority - 2Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target
The tap target
<a href="http://www.bei…31011502007040">沪公网安备 31011502007040号</a> and 1 others are close to other tap targets.The tap target
<a href="http://www.miitbeian.gov.cn/">沪ICP备17051546号</a> and 1 others are close to other tap targets.leetcode-cn.com HTML validation
Warnings
Consider avoiding viewport values that prevent users from resizing documents.
Line: 11 Column: 5 - 133
"... <meta content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover' name='viewport' /> ..."
"... <meta content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover' name='viewport' /> ..."
The “type” attribute is unnecessary for JavaScript resources.
Line: 210 Column: 5 - 120
"...ipt> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/runtime.703a481d0.js" ></scri..." Line: 211 Column: 5 - 126
"...ript> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/common/global.022099a89.js" ></scri..." Line: 212 Column: 5 - 132
"...ript> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/common/styles/index.4ff207751.js" ></scri..." Line: 213 Column: 5 - 124
"...ript> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/vendor-libs.0b13fe675.js" ></scri..." Line: 214 Column: 5 - 124
"...ript> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/common-libs.1c296e9cb.js" ></scri..." Line: 215 Column: 5 - 121
"...ript> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/new-libs.a5e1358de.js" ></scri..." Line: 218 Column: 7 - 136
"... <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/locales/zh-Hans/index.9a2b9300b.js" ></scri..." Line: 462 Column: 3 - 126
"...iv> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/runtime~main.0f42ee0d.js"></scri..." Line: 463 Column: 1 - 126
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-components.9b59b49c.js"></scri..." Line: 464 Column: 1 - 123
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-modules.d6e0cae9.js"></scri..." Line: 465 Column: 1 - 119
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-dls.8a09069b.js"></scri..." Line: 466 Column: 1 - 121
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-track.efec6a90.js"></scri..." Line: 467 Column: 1 - 122
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-assets.9fc4002c.js"></scri..." Line: 468 Column: 1 - 122
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-common.18fc3995.js"></scri..." Line: 469 Column: 1 - 122
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-schema.35728670.js"></scri..." Line: 470 Column: 1 - 116
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/main.ca5b5f19.js"></scri..." Line: 512 Column: 1 - 124
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/apps/home/index.e44acabb1.js" ></scri..." Line: 762 Column: 3 - 33
"...Tag --> <script type="text/javascript"> var..." Line: 949 Column: 3 - 33
"...e> <script type="text/javascript"> /* ..." Line: 1230 Column: 7 - 103
"... <script type="text/javascript" charset="utf-8" src="//g.alicdn.com/sd/ncpc/nc.js?t=202008110334"></scri..." Line: 1231 Column: 7 - 106
"...pt> <script type="text/javascript" charset="utf-8" src="//g.alicdn.com/sd/nch5/index.js?t=202008110334"></scri..."
"...ipt> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/runtime.703a481d0.js" ></scri..." Line: 211 Column: 5 - 126
"...ript> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/common/global.022099a89.js" ></scri..." Line: 212 Column: 5 - 132
"...ript> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/common/styles/index.4ff207751.js" ></scri..." Line: 213 Column: 5 - 124
"...ript> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/vendor-libs.0b13fe675.js" ></scri..." Line: 214 Column: 5 - 124
"...ript> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/common-libs.1c296e9cb.js" ></scri..." Line: 215 Column: 5 - 121
"...ript> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/new-libs.a5e1358de.js" ></scri..." Line: 218 Column: 7 - 136
"... <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/locales/zh-Hans/index.9a2b9300b.js" ></scri..." Line: 462 Column: 3 - 126
"...iv> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/runtime~main.0f42ee0d.js"></scri..." Line: 463 Column: 1 - 126
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-components.9b59b49c.js"></scri..." Line: 464 Column: 1 - 123
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-modules.d6e0cae9.js"></scri..." Line: 465 Column: 1 - 119
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-dls.8a09069b.js"></scri..." Line: 466 Column: 1 - 121
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-track.efec6a90.js"></scri..." Line: 467 Column: 1 - 122
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-assets.9fc4002c.js"></scri..." Line: 468 Column: 1 - 122
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-common.18fc3995.js"></scri..." Line: 469 Column: 1 - 122
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/noj-schema.35728670.js"></scri..." Line: 470 Column: 1 - 116
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-mono-assets/production/head/main.ca5b5f19.js"></scri..." Line: 512 Column: 1 - 124
"...</script> <script type="text/javascript" src="https://static.leetcode-cn.com/cn-assets/webpack_bundles/apps/home/index.e44acabb1.js" ></scri..." Line: 762 Column: 3 - 33
"...Tag --> <script type="text/javascript"> var..." Line: 949 Column: 3 - 33
"...e> <script type="text/javascript"> /* ..." Line: 1230 Column: 7 - 103
"... <script type="text/javascript" charset="utf-8" src="//g.alicdn.com/sd/ncpc/nc.js?t=202008110334"></scri..." Line: 1231 Column: 7 - 106
"...pt> <script type="text/javascript" charset="utf-8" src="//g.alicdn.com/sd/nch5/index.js?t=202008110334"></scri..."
The “charset” attribute on the “script” element is obsolete.
Line: 1230 Column: 7 - 103
"... <script type="text/javascript" charset="utf-8" src="//g.alicdn.com/sd/ncpc/nc.js?t=202008110334"></scri..." Line: 1231 Column: 7 - 106
"...pt> <script type="text/javascript" charset="utf-8" src="//g.alicdn.com/sd/nch5/index.js?t=202008110334"></scri..."
"... <script type="text/javascript" charset="utf-8" src="//g.alicdn.com/sd/ncpc/nc.js?t=202008110334"></scri..." Line: 1231 Column: 7 - 106
"...pt> <script type="text/javascript" charset="utf-8" src="//g.alicdn.com/sd/nch5/index.js?t=202008110334"></scri..."
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
Line: 4 Column: 16 - 6
"...TYPE html> <html> <he..."
"...TYPE html> <html> <he..."
Errors
Bad start tag in “img” in “head”.
Line: 174 Column: 15 - 141
"...<noscript><img src="https://certify.alexametrics.com/atrk.gif?account=tIUcs1Y1Mn20Io" style="display:none" height="1" width="1" alt="" /></nosc..."
"...<noscript><img src="https://certify.alexametrics.com/atrk.gif?account=tIUcs1Y1Mn20Io" style="display:none" height="1" width="1" alt="" /></nosc..."
Stray end tag “noscript”.
Line: 174 Column: 142 - 152
"... alt="" /></noscript> <..."
"... alt="" /></noscript> <..."
Stray end tag “head”.
Line: 204 Column: 3 - 9
"...cript> </head> <bo..."
"...cript> </head> <bo..."
Start tag “body” seen but an element of the same type was already open.
Line: 205 Column: 3 - 8
"...</head> <body> <..."
"...</head> <body> <..."
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Line: 225 Column: 5 - 11
"... <style> #..." Line: 305 Column: 1 - 7
"...lert --> <style> #ho..."
"... <style> #..." Line: 305 Column: 1 - 7
"...lert --> <style> #ho..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Line: 320 Column: 3 - 103
"...ainer"> <img class="leetcode-logo" src="https://assets.leetcode-cn.com/lccn-resources/leetcode-121x75.jpg" /> <im..." Line: 321 Column: 3 - 104
"...jpg" /> <img class="leetcode-logo" src="https://assets.leetcode-cn.com/lccn-resources/leetcode-200x133.jpg" /> <di..." Line: 366 Column: 21 - 113
"... <img src="https://static.leetcode-cn.com/cn-legacy-assets/images/region/cn.svg" height="14"/> ..." Line: 382 Column: 15 - 125
"... <img class="beian" src="https://static.leetcode-cn.com/cn-legacy-assets/images/beian.png" style="float:left;"/> ..." Line: 396 Column: 19 - 111
"... <img src="https://static.leetcode-cn.com/cn-legacy-assets/images/region/cn.svg" height="10"/> ..."
"...ainer"> <img class="leetcode-logo" src="https://assets.leetcode-cn.com/lccn-resources/leetcode-121x75.jpg" /> <im..." Line: 321 Column: 3 - 104
"...jpg" /> <img class="leetcode-logo" src="https://assets.leetcode-cn.com/lccn-resources/leetcode-200x133.jpg" /> <di..." Line: 366 Column: 21 - 113
"... <img src="https://static.leetcode-cn.com/cn-legacy-assets/images/region/cn.svg" height="14"/> ..." Line: 382 Column: 15 - 125
"... <img class="beian" src="https://static.leetcode-cn.com/cn-legacy-assets/images/beian.png" style="float:left;"/> ..." Line: 396 Column: 19 - 111
"... <img src="https://static.leetcode-cn.com/cn-legacy-assets/images/region/cn.svg" height="10"/> ..."
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Line: 516 Column: 1 - 7
"...ok New--> <style> [clas..." Line: 534 Column: 1 - 7
"...OTFIX --> <style> .css-..." Line: 626 Column: 3 - 9
"... <style> ..." Line: 726 Column: 1 - 7
"...t Tag --> <style> [cl..." Line: 800 Column: 3 - 9
"... <style> #..." Line: 847 Column: 3 - 9
"... <style> #qu..." Line: 869 Column: 1 - 7
"...test --> <style> /* ..." Line: 919 Column: 1 - 7
"...script> <style> /* 合作..." Line: 984 Column: 3 - 9
"... <style> /* ..." Line: 1036 Column: 3 - 9
"... <style> #in..." Line: 1133 Column: 1 - 7
"...anner --> <style> .l..."
"...ok New--> <style> [clas..." Line: 534 Column: 1 - 7
"...OTFIX --> <style> .css-..." Line: 626 Column: 3 - 9
"... <style> ..." Line: 726 Column: 1 - 7
"...t Tag --> <style> [cl..." Line: 800 Column: 3 - 9
"... <style> #..." Line: 847 Column: 3 - 9
"... <style> #qu..." Line: 869 Column: 1 - 7
"...test --> <style> /* ..." Line: 919 Column: 1 - 7
"...script> <style> /* 合作..." Line: 984 Column: 3 - 9
"... <style> /* ..." Line: 1036 Column: 3 - 9
"... <style> #in..." Line: 1133 Column: 1 - 7
"...anner --> <style> .l..."
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leetcode-cn.com Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
leetcode-cn.com TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.