The interviewees may ask you to write various ways to reverse a string, or they might ask you to reverse a string without using built-in methods, or they might even ask you to reverse a string using recursion. There are occasions where it is simpler to write problems involving regular exp...
}voidreverseWords1(string&s) {stringrs;for(inti = s.length()-1; i >=0; ) {while(i >=0&& s[i] =='') i--;if(i <0)break;if(!rs.empty()) rs.push_back('');stringt;while(i >=0&& s[i] !='') t.push_back(s[i--]); reverse(t.begin(), t.end()); rs.append(...
return "blue is sky the". 思路:就是从后面往前,找到非空格的长度,然后取到另一个串中。遍历一次就可以了。如下: classSolution {public:voidreverseWords(string&s) {if(s.size() <1)return;intind = s.size() -1, wordLen =0, tmpind;stringans ="";while(ind >=0) { wordLen=0;while(ind...
Given a string and an integer k, you need to reverse the first k characters for every 2k characters counting from the start of the string. If there are less than k characters left, reverse all of them. If there are less than 2k but greater than or equal to k characters, then reverse...
LeetCode Reverse Words in a String 将串中的字翻转 1 class Solution { 2 public: 3 void reverseWords(string &s) { 4 string end="",tem=""; 5 char *p=&s[0]; 6 while(*p!='\0'){ 7 while(*p==' ') //过滤多余的空格,针对串头...
Given a string and an integer k, you need to reverse the first k characters for every 2k characters counting from the start of the string. If there are less than k characters left, reverse all of them. If there are less than 2k but greater than or equal to k characters, then reverse...
Leetcode之Reverse Vowels of a String 问题 问题描述: Write a function that takes a string as input and reverse only the vowels of a string. Note: The vowels does not include the letter "y". 示例一: Given s = "hello", return "......
Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order. Example 1: Input: "Let's take LeetCode contest" Output: "s'teL ekat edoCteeL tsetnoc" 1 2 Note: In the string, each word is separated...
151. Reverse Words in a String Given an input string, reverse the string word by word. For example, Given s = "the sky is blue", return "blue is sky the". 题目大意: 输入一个字符串,将单词序列反转。 思路1: 采用一个vector,来存放中间结果 ...
151. Reverse Words in a String # 题目 # Given an input string, reverse the string word by word. Example 1: Input: "the sky is blue" Output: "blue is sky the" Example 2: Input: " hello world! " Output: "world! hello" Explanation: Your reversed string s