aiterator

2017年4月14日

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: [ [2,4], [3, 阅读全文

posted @ 2017-04-14 20:57 aiterator 阅读(94) 评论(0) 推荐(0) 编辑

LeetCode 76. Minimum Window Substring

摘要： Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n). For example, S = "ADOBECO 阅读全文

posted @ 2017-04-14 20:41 aiterator 阅读(106) 评论(0) 推荐(0) 编辑

LeetCode 74. Search a 2D Matrix

摘要： Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: + Integers in each row are sorted 阅读全文

posted @ 2017-04-14 19:35 aiterator 阅读(83) 评论(0) 推荐(0) 编辑

2017年4月13日

LeetCode 73. Set Matrix Zeroes

摘要： Given a matrix, if an element is 0, set its entire row and column to 0. Do it in place. 题目大意就是将矩阵中等于0的点所在的行和列中的元素全部置为0；并且要求不得声明额外的数组空间。既然不得在额外的数组空间中阅读全文

posted @ 2017-04-13 19:36 aiterator 阅读(99) 评论(0) 推荐(0) 编辑

2017年4月12日

LightOJ 1043 - Triangle Partitioning

摘要： See the picture below. You are given , and . is parallel to . You are also given the area ratio between and . You have to find the value of . 水题；说一下题阅读全文

posted @ 2017-04-12 21:44 aiterator 阅读(113) 评论(0) 推荐(0) 编辑

LightOJ 1042 - Secret Origins

摘要： This is the tale of Zephyr, the greatest time traveler the world will never know. Even those who are aware of Zephyr's existence know very little abou 阅读全文

posted @ 2017-04-12 21:03 aiterator 阅读(234) 评论(0) 推荐(0) 编辑

LeetCode 72. Edit Distance

摘要： Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operation is counted as 1 step.) You have 阅读全文

posted @ 2017-04-12 20:13 aiterator 阅读(83) 评论(0) 推荐(0) 编辑

LeetCode 68. Text Justification

摘要： Given an array of words and a length L, format the text such that each line has exactly L characters and is fully (left and right) justified. You shou 阅读全文

posted @ 2017-04-12 13:38 aiterator 阅读(147) 评论(0) 推荐(0) 编辑

2017年4月11日

LeetCode 65. Valid Number

摘要： Validate if a given string is numeric. Some examples: "0" = true " 0.1 " = true "abc" = false "1 a" = false "2e10" = true Note : It is intended for th 阅读全文

posted @ 2017-04-11 20:42 aiterator 阅读(157) 评论(0) 推荐(0) 编辑

2017年4月10日

LeetCode 64. Minimum Path Sum

摘要： Given a m x n grid filled with non negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path. 阅读全文

posted @ 2017-04-10 13:56 aiterator 阅读(87) 评论(0) 推荐(0) 编辑

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