update readme doc
Merge pull request #6 from wangjinlei/fature/update_readme

update readme doc
Merge pull request #7 from wangjinlei/feature/add_32

Hi
Merge pull request #8 from wangjinlei/feature/add_32

Feature/add 32
Merge pull request #9 from wangjinlei/feature/add_32

update
Merge pull request #10 from wangjinlei/feature/add_32

Feature/add 32
Merge pull request #11 from wangjinlei/feature/add_32

fmt
Merge pull request #12 from wangjinlei/feature/add_32

remove .class file
Merge pull request #13 from wangjinlei/feature/add_32

add links for the finished problem
Merge pull request #14 from wangjinlei/feature/add_32

Feature/add 32
Merge pull request #15 from wangjinlei/feature/add_32

update
Merge pull request #16 from wangjinlei/feature/add_32

add pic fold
Merge pull request #17 from wangjinlei/feature/add_32

update
Merge branch 'develop' of github.com:wangjinlei/interview-problems into feature/add_32
update elegant method