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https://github.com/ianding1/leetcode.vim

Solve LeetCode problems in Vim!
https://github.com/ianding1/leetcode.vim

leetcode vim

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Solve LeetCode problems in Vim!

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# leetcode.vim



[![asciicast][thumbnail]][asciicast]



Solve LeetCode problems in Vim!



This Vim plugin is inspired by [skygragon/leetcode-cli][leetcode-cli].



**Attention:** Recently LeetCode used Google reCAPTCHA to enhance security,

prohibiting automatic login through LeetCode API.



The new login procedure needs you to **login in your browser first** so that

**leetcode.vim** can read the LeetCode session cookie from the browser's cookie

storage.



Supported browsers are: **Chrome**, **Firefox**. Safari is not supported

yet.



The one-time setup:



1. Install keyring and browser-cookie3:

```shell

pip3 install keyring browser-cookie3 --user

```

2. Set `g:leetcode_browser` to `'chrome'` or `'firefox'`.



Thanks [@zhuopro](https://github.com/zhoupro)

(see [#25](https://github.com/ianding1/leetcode.vim/issues/25))

for his brilliant idea!



## Installation



1. Vim with `+python3` feature is **required**. Install the **pynvim** package

for Neovim:

```sh

pip3 install pynvim --user

```

2. Install **keyring** and **browser-cookie3**:

```sh

pip3 install keyring browser-cookie3 --user

```

3. Install the plugin:

```vim

Plug 'ianding1/leetcode.vim'

```



## Quick Start



- `:LeetCodeList`: browse the problems.

- `:LeetCodeTest`: run the code with the default test case.

- `:LeetCodeSubmit`: submit the code.

- `:LeetCodeSignIn`: manually sign in.



## Key mappings



**leetcode.vim** doesn't bind any key mappings by default. Put the following

lines to your **.vimrc** to set up the key mappings.



```vim

nnoremap ll :LeetCodeList

nnoremap lt :LeetCodeTest

nnoremap ls :LeetCodeSubmit

nnoremap li :LeetCodeSignIn

```



## Customization



### `g:leetcode_china`



When non-zero, use LeetCode China accounts instead.



Default value is `0`.



### `g:leetcode_solution_filetype`



The preferred programming language.



Values: `'cpp'`, `'java'`, `'python'`, `'python3'`, `'csharp'`, `'javascript'`,

`'ruby'`, `'swift'`, `'golang'`, `'scala'`, `'kotlin'`, ``'rust'``.



Default value is `'cpp'`.



### `g:leetcode_browser`



Set to the browser that stores the LeetCode session cookie.



Values: `'disabled'`, `'chrome'`, `'firefox'`



Default value is `'disabled'`.



### `g:leetcode_hide_paid_only`



Hide the paid only problems on the list.



Default value is `0`.



### `g:leetcode_hide_topics`



Hide the topics section.



Default value is `0`



### `g:leetcode_hide_companies`



Hide the companies section.



Default value is `0`



### `g:leetcode_problemset`



Set the problemset to get from leetcode. 



Default value is `all`



## Updates



- 2019/12/20: Fix the login issue caused by reCAPTCHA.

- 2019/08/01: Support custom test input

- 2019/07/28: Support showing frequencies and sorting by columns

- 2019/07/27:

  + Support LeetCode China accounts

  + Support refreshing

- 2019/07/23: Support topics and companies



## FAQ



### I use Ubuntu and get errors when signing in. How can I fix it?



Ubuntu users might see the error message below when signing in.

```text

    raise InitError("Failed to unlock the collection!")

keyring.errors.InitError: Failed to unlock the collection!

```



It's caused by the misconfiguration of python-keyring. One way to fix it is to create a file `~/.local/share/python_keyring/keyringrc.cfg` with the following content:



```ini

[backend]

default-keyring=keyring.backends.Gnome.Keyring

```



### Why can't I test the problem/submit the problem/list the problems?



~~Once you sign in on your browser in LeetCode website, the LeetCode session in

Vim get expired immediatelly. Then you need to sign in again in Vim before

doing other things.~~ (No longer having this problem)



### Why can't I test and submit solutions?



According to issue [#5][#5], **if the email address is not active, then you can

only login and download problems, but cannot test and submit any code.**



### I got some errors like "ModuleNotFoundError: No module named 'keyring.util.escape'"



This solution worked for me:

```shell

pip3 install --upgrade keyrings.alt

```



[thumbnail]: https://asciinema.org/a/200004.png

[asciicast]: https://asciinema.org/a/200004

[leetcode-cli]: https://github.com/skygragon/leetcode-cli

[#5]: https://github.com/ianding1/leetcode.vim/issues/5