Q1.1
CTCI Q1.2
chap 1 refactor
CTCI Q2.1
CTCI Q2.1
Q2.1 & Q2.2
Merge branch 'master' into ctci
CTCI Q2.2
CTCI Q2.3
CTCI Q2.3
CTCI Q2.4
CTCI Q2.5
CTCI Q2.6
CTCI Q2.6 Statement
CTCI Q2.7
Merge pull request #20 from usunyu/ctci

Ctci
CTCI Q3.1
CTCI Q3.2
CTCI Q3.4
CTCI Q3.6