some code
Merge branch 'master' of github.com:Werewolflsp/LeetCode
Revert "Merge branch 'master' of github.com:Werewolflsp/LeetCode"

This reverts commit e29709e4d1b2d4dbf2bb4bfa567ed52a4bdf978e, reversing
changes made to f0341c7f563e3454f77bed3383208b8664965557.
some code