随笔分类 -  leetCode题解记录

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leetCode Ransom Note
摘要：1、题目描述 Given an arbitrary ransom note string and another string containing letters from all the magazines, write a function that will return true if t 阅读全文
posted @ 2018-03-28 17:52 山里的小勇子 阅读(145) 评论(0) 推荐(0)
leetCode题解 Student Attendance Record I
摘要：1、题目描述 You are given a string representing an attendance record for a student. The record only contains the following three characters: A student coul 阅读全文
posted @ 2018-03-28 17:16 山里的小勇子 阅读(209) 评论(0) 推荐(0)
leetCode题解之根据字符出现的频率排序
摘要：1、题目描述 Given a string, sort it in decreasing order based on the frequency of characters. Example 1: Example 2: 阅读全文
posted @ 2018-03-27 20:06 山里的小勇子 阅读(874) 评论(0) 推荐(0)
leetCode 题解之字符串中第一个不重复出现的字符
摘要：1、题目描述 Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" re 阅读全文
posted @ 2018-03-27 18:59 山里的小勇子 阅读(1147) 评论(0) 推荐(0)
leetCode题解之旋转数字
摘要：1、题目描述 X is a good number if after rotating each digit individually by 180 degrees, we get a valid number that is different from X. Each digit must be 阅读全文
posted @ 2018-03-27 14:08 山里的小勇子 阅读(1130) 评论(0) 推荐(0)
leetCode Detect Capital
摘要：1、问题描述 Given a word, you need to judge whether the usage of capitals in it is right or not. We define the usage of capitals in a word to be right when 阅读全文
posted @ 2018-03-26 17:16 山里的小勇子 阅读(143) 评论(0) 推荐(0)
leetCode题解 Reverse Words in a String III
摘要：1、题目描述 Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word o 阅读全文
posted @ 2018-03-26 16:12 山里的小勇子 阅读(167) 评论(0) 推荐(0)
leetCode题解 寻找运动环
摘要：1、题目描述 Initially, there is a Robot at position (0, 0). Given a sequence of its moves, judge if this robot makes a circle, which means it moves back to 阅读全文
posted @ 2018-03-26 15:30 山里的小勇子 阅读(237) 评论(0) 推荐(0)

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