Reading Assignment
http://community.topcoder.com/tc?module=Static&d1=tutorials&d2=binaryIndexedTrees Finish
http://community.topcoder.com/tc?module=Static&d1=tutorials&d2=binarySearch Finish
thinking:我一直以为自己已经精通二分,然后现在才发现自己根本没有深入,读罢此文,做了2次测试,然后果断又添加了点东西去“二分总结”
http://community.topcoder.com/tc?module=Static&d1=tutorials&d2=lowestCommonAncestor Not begin