leetcode题解总结归类 - 随笔分类 - SarahLiu77

【leetcode】500. Keyboard Row

摘要：问题描述： Given a List of words, return the words that can be typed using letters of alphabet on only one row's of American keyboard like the image below. 阅读全文

posted @ 2017-04-13 09:25 SarahLiu77 阅读(422) 评论(0) 推荐(0)

[LeetCode] Binary Watch 二进制表

摘要：A binary watch has 4 LEDs on the top which represent the hours (0-11), and the 6 LEDs on the bottom represent the minutes (0-59). Each LED represents 阅读全文

posted @ 2016-12-22 16:00 SarahLiu77 阅读(264) 评论(0) 推荐(0)

【leetcode】448. Find All Numbers Disappeared in an Array

摘要：Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements of [1, n] 阅读全文

posted @ 2016-12-21 16:35 SarahLiu77 阅读(185) 评论(0) 推荐(0)

453. Minimum Moves to Equal Array Elements

摘要：Given a non-empty integer array of size n, find the minimum number of moves required to make all array elements equal, where a move is incrementing n 阅读全文

posted @ 2016-12-20 16:08 SarahLiu77 阅读(197) 评论(0) 推荐(0)

回文字符串系列问题

摘要：关于回文字符串会有很多算法题，下面收集了一些常见的算法。 [LeetCode] Palindrome Pairs 回文对 Given a list of unique words, find all pairs of distinct indices (i, j) in the given list 阅读全文

posted @ 2016-11-03 14:41 SarahLiu77 阅读(534) 评论(0) 推荐(0)

找两个数组的重合数字系列

摘要：【leetcode】349. Intersection of Two Arrays Given two arrays, write a function to compute their intersection. Example:Given nums1 = [1, 2, 2, 1], nums2 阅读全文

posted @ 2016-10-27 16:36 SarahLiu77 阅读(763) 评论(0) 推荐(0)

回文字符串系列问题

摘要：【leetcode】409. Longest Palindrome Given a string which consists of lowercase or uppercase letters, find the length of the longest palindromes that can 阅读全文

posted @ 2016-10-26 10:37 SarahLiu77 阅读(177) 评论(0) 推荐(0)

【leetcode】Find All Anagrams in a String

摘要：【leetcode】438. Find All Anagrams in a String Given a string s and a non-empty string p, find all the start indices of p's anagrams in s. Strings consi 阅读全文

posted @ 2016-10-26 10:22 SarahLiu77 阅读(642) 评论(0) 推荐(0)

【leetcode】 First Missing Positive

摘要：【LeetCode】First Missing Positive Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3 阅读全文

posted @ 2016-10-25 16:12 SarahLiu77 阅读(137) 评论(0) 推荐(0)

Trapping Rain Water

摘要：[LeetCode] 42. Trapping Rain Water Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much wate 阅读全文

posted @ 2016-10-25 14:42 SarahLiu77 阅读(152) 评论(0) 推荐(0)

区间合并问题

摘要：【LeetCode】57. Insert Interval Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary). You may assume 阅读全文

posted @ 2016-10-21 14:31 SarahLiu77 阅读(464) 评论(0) 推荐(0)

Sort colors系列

摘要：75. Sort Colors 问题描述：给一个包含n个数字的数组，其中有0,1,2；排序使得所有相同的数字相邻，且按照0,1,2的顺序。思路：（1）计数排序：需要扫两遍数组，一遍统计个数，第二遍开始摆放数字。代码如下：（2）如果只能扫一遍，很容易想到的就是左边存放0和1，右边存放2.两阅读全文

posted @ 2016-10-19 19:02 SarahLiu77 阅读(173) 评论(0) 推荐(0)

Word Ladder系列

摘要：1.Word Ladder 问题描述：给两个word（beginWord和endWord）和一个字典word list，找出从beginWord到endWord之间的长度最长的一个序列，条件： 1.字典中的每个单词只能使用一次； 2.序列中的每个单词都必须是字典中的单词；例如： Given:be 阅读全文

posted @ 2016-10-19 11:37 SarahLiu77 阅读(277) 评论(0) 推荐(0)

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