摘要：
对于传统的二分查找，若能找到，则返回target的下标，若找不到则返回-1后，退出函数。齐代码比较简单，如下：int bSearch(vec vec, int start,int end,int target){ int first = start,last = end,mid; whi... 阅读全文
摘要：
Given two wordsword1andword2, find the minimum number of steps required to convertword1toword2. (each operation is counted as 1 step.)You have the fol... 阅读全文