Merge pull request #6 from raulchen/master

update atoi
add atoi

add atoi
Liu xianglong's solutions to 3 problems of week 3
add travel vote to tcse

add travel vote to tcse
week 3 code by linjingjian
Merge branch 'master' of https://github.com/coderfengyun/TCSE2012

Conflicts:
	.gitignore
remove redundant code

remove redundant code
liu xianglong's solutions to rest of week 3
add strStr

add strStr
add Rabin-Karp implemention
add Rabin-Karp implemention
add simplify path

add simplify path
add strStr

add strStr
Merge branch 'master' of https://github.com/coderfengyun/TCSE2012

Conflicts:
	WeeklyCode/week3/Implement strStr()/chentienan.java
add valid palindrome

add valid palindrome
regular expression
update simplify path

update simplify path
commit week3 code
add Regular Expression

add Regular Expression
add kmp implement and delete directory travel