LeetCode

Solve LeetCode problems in VS Code with java

由于以下问题，原 vscode-leetcode 插件对 Java 本地调试不友好：

1. leetcode 生成的代码模板类名都是 Solution，编译会出现类名冲突
2. 没有 main 入口
3. 部分问题还需要其他类定义（eg:ListNode），本地无法通过编译

所以分叉了 vscode-leetcode 插件来定制化：

1. 修改 java 解题文件夹为${snake_case_name}_${id}, 并以此作为 java 的package,用package隔离来解决类同名冲突问题。

2. 修改 java 解题文件名为${PascalCaseName}${id}.${ext}, 并生成名为${PascalCaseName}${id}的public class, 其中包含 Java 启动入口main方法。

3. 如果有额外的类定义，则冲注释中解析出类定义，作为非公开类，解决本地类确实问题。

// @debug code=start
package merge_two_sorted_lists_21;

public class MergeTwoSortedLists21 {
    public static void main(String[] args) {
        // TODO generate params by yourself
        ListNode list1;
        ListNode list2;

        new Solution().mergeTwoLists(list1, list2);
    }
}

class ListNode {
     int val;
     ListNode next;
     ListNode() {}
     ListNode(int val) { this.val = val; }
     ListNode(int val, ListNode next) { this.val = val; this.next = next; }
}
// @debug code=end

• English Document | 中文文档

❗️ Attention ❗️- Workaround to login to LeetCode endpoint

Note: If you are using leetcode-cn.com, you can just ignore this section.

Recently we observed that the extension cannot login to leetcode.com endpoint anymore. The root cause of this issue is that leetcode.com changed its login mechanism and so far there is no ideal way to fix that issue.

Thanks for @yihong0618 provided a workaround which can somehow mitigate this. Now you can simply click the Sign In button and then select Third Party login or Cookie login.

Note: If you want to use third-party login(Recommended), please make sure your account has been connected to the third-party. If you want to use Cookie login, click here to see the steps.

Requirements

• VS Code 1.30.1+
• Node.js 10+

  NOTE: Please make sure that Node is in your PATH environment variable. You can also use the setting leetcode.nodePath to specify the location of your Node.js executable.

Quick Start

Features

Sign In/Out

• Simply click Sign in to LeetCode in the LeetCode Explorer will let you sign in with your LeetCode account.

• You can also use the following command to sign in/out:

  • LeetCode: Sign in
  • LeetCode: Sign out

---

Switch Endpoint

• By clicking the button at the explorer's navigation bar, you can switch between different endpoints.

• The supported endpoints are:

  • leetcode.com
  • leetcode-cn.com

  Note: The accounts of different endpoints are not shared. Please make sure you are using the right endpoint. The extension will use leetcode.com by default.

---

Pick a Problem

• Directly click on the problem or right click the problem in the LeetCode Explorer and select Preview Problem to see the problem description.

• Select Show Problem to directly open the file with the problem description.

  Note：You can specify the path of the workspace folder to store the problem files by updating the setting leetcode.workspaceFolder. The default value is：$HOME/.leetcode/.

  You can specify whether including the problem description in comments or not by updating the setting leetcode.showCommentDescription.

  You can switch the default language by triggering the command: LeetCode: Switch Default Language.

---

Editor Shortcuts

• The extension supports 5 editor shortcuts (aka Code Lens):

  • Submit: Submit your answer to LeetCode.
  • Test: Test your answer with customized test cases.
  • Star/Unstar: Star or unstar the current problem.
  • Solution: Show the top voted solution for the current problem.
  • Description: Show the problem description page.

  Note: You can customize the shortcuts using the setting: leetcode.editor.shortcuts. By default, only Submit and Test shortcuts are enabled.

---

Search problems by Keywords

• By clicking the button at the explorer's navigation bar, you can search the problems by keywords.

---

Manage Session

• To manage your LeetCode sessions, just clicking the LeetCode: *** at the bottom of the status bar. You can switch between sessions or create, delete a session.

Settings

Setting Name	Description	Default Value
leetcode.hideSolved	Specify to hide the solved problems or not	false
leetcode.showLocked	Specify to show the locked problems or not. Only Premium users could open the locked problems	false
leetcode.defaultLanguage	Specify the default language used to solve the problem. Supported languages are: bash, c, cpp, csharp, golang, java, javascript, kotlin, mysql, php, python,python3,ruby,rust, scala, swift, typescript	N/A
leetcode.useWsl	Specify whether to use WSL or not	false
leetcode.endpoint	Specify the active endpoint. Supported endpoints are: leetcode, leetcode-cn	leetcode
leetcode.workspaceFolder	Specify the path of the workspace folder to store the problem files.	""
leetcode.filePath	Specify the relative path under the workspace and the file name to save the problem files. More details can be found here.
leetcode.enableStatusBar	Specify whether the LeetCode status bar will be shown or not.	true
leetcode.editor.shortcuts	Specify the customized shortcuts in editors. Supported values are: submit, test, star, solution and description.	["submit, test"]
leetcode.enableSideMode	Specify whether preview, solution and submission tab should be grouped into the second editor column when solving a problem.	true
leetcode.nodePath	Specify the Node.js executable path. for example, C:\Program Files\nodejs\node.exe	node
leetcode.showCommentDescription	Specify whether to include the problem description in the comments	false
leetcode.useEndpointTranslation	Use endpoint's translation (if available)	true
leetcode.colorizeProblems	Add difficulty badge and colorize problems files in explorer tree	true
leetcode.problems.sortStrategy	Specify sorting strategy for problems list	None

Want Help?

When you meet any problem, you can check out the Troubleshooting and FAQ first.

If your problem still cannot be addressed, feel free to reach us in the Gitter Channel or file an issue.

Release Notes

Refer to CHANGELOG

Acknowledgement

• This extension is based on @skygragon's leetcode-cli open source project.
• Special thanks to our contributors.