Merge pull request #1 from raulchen/master

add week 2
Merge pull request #2 from raulchen/master

update week2 problems
Merge pull request #3 from raulchen/master

update week2 code by chenhao
Create linjingjian.cpp

by linjingjian
finish solutions to questions of week 1
Merge branch 'master' of https://github.com/coderfengyun/TCSE2012
gaoqiang commit 3 solutions for weekly code 1
week2 code by keen

week2 coding
Liu Xianglong's solutions to questions of week 2
Merge branch 'master' of https://github.com/coderfengyun/TCSE2012
add with the naive way

add with the naive way, need to be optimized
add code without tests

add code without tests
refactor

refactor
refactor

refactor
Create chenxi.cpp
Merge pull request #1 from coderfengyun/master

0421