Given a strings1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively.Below is one possible representation...
分类：
其他好文 时间：
2014-07-23 15:06:06
阅读次数：
320
Given an array of strings, return all groups of strings that are anagrams.Note: All inputs will be in lower-case.题解：所谓的anagrams，只若干个词，它们包含的字母的个数和种类完全一...
分类：
其他好文 时间：
2014-07-23 12:55:06
阅读次数：
167
Given a stringSand a stringT, count the number of distinct subsequences ofTinS.A subsequence of a string is a new string which is formed from the orig...
分类：
其他好文 时间：
2014-07-23 12:36:06
阅读次数：
209
Given a sorted linked list, delete all nodes that have duplicate numbers, leaving onlydistinctnumbers from the original list.For example,Given1->2->3-...
分类：
其他好文 时间：
2014-07-23 12:20:16
阅读次数：
205
Givenn, generate all structurally uniqueBST's(binary search trees) that store values 1...n.For example,Givenn= 3, your program should return all 5 uni...
分类：
其他好文 时间：
2014-07-22 22:42:33
阅读次数：
243
Given two binary strings, return their sum (also a binary string).For example,a ="11"b ="1"Return"100".题解：简单的二进制加法模拟。a，b的最后以为对齐开始进行加法，用carries保存进位，如果加...
分类：
其他好文 时间：
2014-07-22 22:42:32
阅读次数：
196
Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below.For example, given the fol...
分类：
其他好文 时间：
2014-07-22 22:40:36
阅读次数：
238
Given two wordsword1andword2, find the minimum number of steps required to convertword1toword2. (each operation is counted as 1 step.)You have the fol...
分类：
其他好文 时间：
2014-07-22 22:37:33
阅读次数：
191
Given a linked list, reverse the nodes of a linked listkat a time and return its modified list.If the number of nodes is not a multiple ofkthen left-o...
分类：
其他好文 时间：
2014-07-22 22:35:53
阅读次数：
230
Given a collection of numbers that might contain duplicates, return all possible unique permutations.For example,[1,1,2]have the following unique perm...
分类：
其他好文 时间：
2014-07-22 22:32:33
阅读次数：
247
