an exercise a day, keep the rubbish away
an exercise a day(by Tag), after 10 exercises change the tag and PR the dev branch.
Keep writing notes after every exercise
the first submit will keep in .cpp file and the result will also keep in the same name .md file
- 4.寻找两个正序数组的中位数
- 37.解数独
- 51.n-皇后