发布时间：2015-05-07 23:28:19

【问题描述】Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length.Do not allocate extra space for another array, you must do this in place with constant memory.For example,Given input array nums = [.........【阅读全文】

发布时间：2015-05-07 23:25:07

【问题描述】Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.For example:Given the below binary tree and sum = 22, 5 / \ 4 8 / / \ .........【阅读全文】

发布时间：2015-05-07 23:23:37

【问题描述】Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path from the root node down to the nearest leaf node.【解决方案】点击(此处)折叠或打开/** * Definition for binary tree.........【阅读全文】

发布时间：2015-05-07 23:21:53

【问题描述】Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight).For example, the 32-bit integer ’11' has binary representation 00000000000000000000000000001011, so the function should return 3.【解决方案】.........【阅读全文】

发布时间：2015-05-07 23:20:17

【问题描述】Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.【解决方案】点击(此处)折叠或打开int strStr(char* haystack, char* needle) {    if(NULL == ne.........【阅读全文】