2015年4月17日
59. Spiral Matrix II
摘要： 题目： Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. For example,Given n = 3, You should return the fol 阅读全文
posted @ 2015-04-17 23:47 YRB 阅读(287) 评论(0) 推荐(0)
58. Length of Last Word
摘要： 题目： Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string. If the last 阅读全文
posted @ 2015-04-17 23:45 YRB 阅读(180) 评论(0) 推荐(0)
57. Insert Interval
摘要： 题目： Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary). You may assume that the intervals were in 阅读全文
posted @ 2015-04-17 23:44 YRB 阅读(495) 评论(0) 推荐(0)
55. Jump Game
摘要： 题目： Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your m 阅读全文
posted @ 2015-04-17 23:41 YRB 阅读(334) 评论(0) 推荐(0)
54. Spiral Matrix
摘要： 题目： Given a matrix of m x n elements (m rows, ncolumns), return all elements of the matrix in spiral order. For example,Given the following matrix: Yo 阅读全文
posted @ 2015-04-17 23:40 YRB 阅读(485) 评论(0) 推荐(0)
53. Maximum Subarray
摘要： 题目： Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [−2,1,−3,4,− 阅读全文
posted @ 2015-04-17 23:39 YRB 阅读(782) 评论(0) 推荐(0)
52. N-Queens II
摘要： 题目： Follow up for N-Queens problem. Now, instead outputting board configurations, return the total number of distinct solutions. Show Tags Show Simila 阅读全文
posted @ 2015-04-17 23:38 YRB 阅读(439) 评论(0) 推荐(0)
51. N-Queens
摘要： 题目： 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 阅读全文
posted @ 2015-04-17 23:37 YRB 阅读(728) 评论(0) 推荐(0)
50. Pow(x, n)
摘要： 题目： Implement pow(x, n). 链接： http://leetcode.com/problems/powx-n/ 题解： 使用二分法求实数幂，假如不建立临时变量halfPow，直接return计算结果的话会超时，还没仔细研究为什么。 Time Complexity - O(logn 阅读全文
posted @ 2015-04-17 23:36 YRB 阅读(474) 评论(0) 推荐(0)
49. Anagrams
摘要： 题目： Given an array of strings, return all groups of strings that are anagrams. Note: All inputs will be in lower-case. Hide Tags Hash Table String Giv 阅读全文
posted @ 2015-04-17 23:32 YRB 阅读(348) 评论(0) 推荐(0)