344. 反转字符串 - 力扣(LeetCode) 代码随想录 解法1:双指针 因为while每次循环需要进行条件判断,而range函数不需要,直接生成数字,因此时间复杂度更低。推荐使用range class Solution: def reverseString(self, s: List[str]) -> None: """ Do not return anything, modify s in-place instead. """ n =...
Write a function that takes a string as input and reverse only the vowels of a string. Example 1: Given s = “hello”, return “holle”. Example 2: Given s = “leetcode”, return “leotcede”. Note: The vowels does not include the letter “y”. 这道题考察的是反转一个字符串中的...
leetcode 92. Reverse Linked List II 反转链表 + 头插入反转链表(或者使用栈) Reverse a linked list from position m to n. Do it in-place and in one-pass. For example: Given 1->2->3->4->5->NULL, m = 2 and n = 4, return 1->4->3->2->5->NULL. Note: Given m, n satisfy...
本题题意十分简单,就是做一个字符串的反转,注意是没2k个子串中前k个反转,其余的不变 建议和leetcode 344. Reverse String 反转字符串 一起学习 代码如下: #include <iostream> #include <vector> #include <map> #include <set> #include <queue> #include <stack> #include <string> #include <climits>...
leetcode 206. Reverse Linked List 反转字符串,Reverseasinglylinkedlist.反转链表,我这里是采用头插法来实现反转链表。代码如下:/*classListNode{intval;ListNodenext;ListNode(intx){val=x;}}*/publicclassSolution{publicListNoderever
leetcode 493. Reverse Pairs 逆序对数量 + 归并排序做法,Givenanarraynums,wecall(i,j)ani2,3,1]Output:2
Leetcode: Reverse Words in a String 题目: Given an input string, reverse the string word by word. For example, Given s = “the sky is blue”, return “blue is sky the”. 思路一: 先休整下给定的字符串,去掉其中的多于一个的空格,就是使所有单词之间的空格都变成一个,然后去掉最后面的空格,...
在前文中我们已经讲过STL中的适配器概念,即在底层将一个类的接口转化为另一个类的接口,并根据此设计模式模拟实现了stack与queue。本篇文章将讲解的是适配器... 15211 【LeetCode热题100】【普通数组】轮转数组 size数组intleetcodereverse 叶茂林2024-04-03 ...
1#defineADDITION '+'2#defineSUBSTRACTION '-'3#defineMULTIPLICATION '*'4#defineDIVISION '/'567classSolution {8public:9set<char> tokenSet{'+','-','*','/'};10stack<int>num;11intevalRPN(vector<string> &tokens) {12for(auto &token : tokens) {13auto iter = tokenSet.find( token[token...
LeetCode之Reverse Words in a String 1.(原文)问题描述 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Given an input string, reverse the string word by word. For example, Given s ="the sky is blue", return"blue is sky the". click to show clarification....