i-Blue的专栏

Tags: backTracking(回溯法)    http://blog.youkuaiyun.com/jarvischu/article/details/16067319               http://www.cnblogs.com/chinazhangjie/archive/2010/10/22/1858410.html             http://blog.csdn.ne

mplement regular expression matching with support for '.' and '*'. '.' Matches any single character. '*' Matches zero or more of the preceding element. The matching should cover the entire input str

Given an integer array with all positive numbers and no duplicates, find the number of possible combinations that add up to a positive integer target. Example: nums = [1, 2, 3] target = 4 The pos