Chapter1 java code
Add reference for binary_search from Peter Norvig
java code for chapter1 & 2
Merge branch 'master' of https://github.com/schemacs/The-Art-Of-Programming-By-July
adding java code for chapter1 & 2
add some comment
Merge pull request #130 from railgunlv5/master

貌似还没有人写java？