add testcase

[halfrost]

No description provided.

[codecov-commenter]

Codecov Report

Merging #43 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #43   +/-   ##
=======================================
  Coverage   73.33%   73.34%           
=======================================
  Files         519      519           
  Lines       11762    11762           
=======================================
+ Hits         8626     8627    +1     
+ Misses       2875     2874    -1     
  Partials      261      261           

Impacted Files	Coverage Δ
leetcode/0001.Two-Sum/1. Two Sum.go	100.00% <0.00%> (+14.28%)	⬆️

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