1.题目描述 2.题目分析 首先将输入句子拆分成单词,在这个过程中将所有大写字母变换成小写字母,将每一个单词作为一个字符串放入一个 map<string,int> 容器中,最后遍历容器,查找出现次数最多且没有在banned中出现的字符串. 3.代码 string mostCommonWord(string paragraph, vector<string>& banned) { map<string,int> m; for( string::iterator i…

leetcode: 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 word does not exist, return 0. Note: A word is defined as a character sequence consists of non…

https://leetcode.com/problems/longest-common-prefix/ 原题: Write a function to find the longest common prefix string amongst an array of strings. 思路: 简单,直接遍历查找即可. AC代码: class Solution { public: string longestCommonPrefix(vector<string>& strs) { in…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 正则+统计 日期 题目地址:https://leetcode.com/problems/most-common-word/description/ 题目描述 Given a paragraph and a list of banned words, return the most frequent word that is not in the li…

我现在在做一个叫<leetbook>的免费开源书项目,力求提供最易懂的中文思路,目前把解题思路都同步更新到gitbook上了,需要的同学可以去看看 书的地址:https://hk029.gitbooks.io/leetbook/ 014.Longest Common Prefix[E] 问题 Write a function to find the longest common prefix string amongst an array of strings. Subscribe to se…

这是悦乐书的第321次更新,第342篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第190题(顺位题号是819).给定一个段落和一组禁止词,返回不在禁止词列表中的最常用词.段落中保证至少有一个词没有被禁止,并且答案是独一无二的.禁用单词列表中的单词以小写字母给出,没有标点符号.段落中的单词不区分大小写.答案是小写的.例如: 输入: paragraph = "Bob hit a ball, the hit BALL flew far after it was hit.…

1.题目描述 2.问题分析 直接使用循环解决问题 3.代码 string longestCommonPrefix(vector<string>& strs) { string res = ""; ) return res; bool isFull = true; bool isEqual = true; ; while(isFull && isEqual){ vector<string>::iterator it = strs.begin…

Given a paragraph and a list of banned words, return the most frequent word that is not in the list of banned words.  It is guaranteed there is at least one word that isn't banned, and that the answer is unique. Words in the list of banned words are…

819. Most Common Word Given a paragraph and a list of banned words, return the most frequent word that is not in the list of banned words.  It is guaranteed there is at least one word that isn't banned, and that the answer is unique. Words in the lis…

leetcode面试准备:Lowest Common Ancestor of a Binary Search Tree & Binary Tree 1 题目 Binary Search Tree的LCA Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wikiped…