2017年1月5日
Merge Sorted Array
摘要： Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note:You may assume that nums1 has enough space (size tha 阅读全文
posted @ 2017-01-05 22:34 WillWu 阅读(111) 评论(0) 推荐(0) 编辑
Subsets II
摘要： Given a collection of integers that might contain duplicates, nums, return all possible subsets. Note: The solution set must not contain duplicate sub 阅读全文
posted @ 2017-01-05 21:09 WillWu 阅读(116) 评论(0) 推荐(0) 编辑
Subsets
摘要： Given a set of distinct integers, nums, return all possible subsets. Note: The solution set must not contain duplicate subsets. For example,If nums =  阅读全文
posted @ 2017-01-05 10:52 WillWu 阅读(130) 评论(0) 推荐(0) 编辑
2017年1月4日
Combinations
摘要： Given two integers n and k, return all possible combinations of k numbers out of 1 ... n. For example,If n = 4 and k = 2, a solution is: 分析： 组合的实现，之前实 阅读全文
posted @ 2017-01-04 23:01 WillWu 阅读(117) 评论(0) 推荐(0) 编辑
Word Search
摘要： Given a 2D board and a word, find if the word exists in the grid. The word can be constructed from letters of sequentially adjacent cell, where "adjac 阅读全文
posted @ 2017-01-04 21:18 WillWu 阅读(192) 评论(0) 推荐(0) 编辑
2016年12月30日
Sort Colors
摘要： Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, 阅读全文
posted @ 2016-12-30 21:41 WillWu 阅读(137) 评论(0) 推荐(0) 编辑
2016年12月29日
Permutation Sequence
摘要： The set [1,2,3,…,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order,We get the following sequence 阅读全文
posted @ 2016-12-29 22:01 WillWu 阅读(100) 评论(0) 推荐(0) 编辑
2016年12月28日
N-Queens
摘要： The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n, return all 阅读全文
posted @ 2016-12-28 23:04 WillWu 阅读(129) 评论(0) 推荐(0) 编辑
Multiply Strings
摘要： Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-neg 阅读全文
posted @ 2016-12-28 13:07 WillWu 阅读(127) 评论(0) 推荐(0) 编辑
2016年12月27日
Permutations II
摘要： Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example,[1,1,2] have the following unique pe 阅读全文
posted @ 2016-12-27 21:56 WillWu 阅读(99) 评论(0) 推荐(0) 编辑