// Importing necessary Java utilities.importjava.util.*;// Define a class named Main.publicclassMain{// Method to reverse words in a given string.publicstaticStringWordsInReverse(Stringstr1){// Create a StringBuilder object and reverse the entire string.StringBuildersb=newStringBuilder(str1);Strin...
02 第一种解法 将s按照空格拆分为字符串数组,然后对数组中的每一个元素做翻转,再以空格拼接,作为结果返回。 publicStringreverseWords(Strings) {String[] arr = s.split(" ");StringBuilderresult =newStringBuilder();for(int i=0; i<arr.length; i++) {Stringss = arr[i];StringBuildersb =newStringBui...
publicString reverseWords(String s) { String[] words = s.split("\\s+");// regular expression StringBuffer sb =newStringBuffer(); for(inti = words.length -1; i >=0; --i){ sb.append(words[i] +" "); } returnsb.toString().trim();//trim是去除字符串的首尾空格 }...
Input: "a good example" Output: "example good a" Explanation: You need to reduce multiple spaces between two words to a single space in the reversed string. Note: A word is defined as a sequence of non-space characters. Input string may contain leading or trailing spaces. However, your ...
LeetCode Top Interview Questions 557. Reverse Words in a String III (Java版; Easy) 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 order. ...
You need to reduce multiple spaces between two words to a single space in the reversed string. 思路: 核心思路就是找到两个空格之间的单词,然后生成这个新单词。正则表达式消耗了一些时间,用递归之后运行时间降低了不少。 代码: java: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 class Solution {...
LeetCode 557 Reverse Words in a String III java 首先按照空格对字符串进行分隔,然后将每个单词进行翻转后再拼接回字符串即可,需要注意拼接时记得加空格,但最后一个单词不需要加。 一份执着✘ 2018/12/14 5580 Leetcode#557. Reverse Words in a String III(反转字符串中的单词 III) 其他 给定一个字符串...
Java Code: // Importing the required Java utilities packageimportjava.util.*;// Defining a class named SolutionpublicclassSolution{// Method to reverse the words in a given stringpublicstaticStringreverse_str_word(Stringinput_sentence){// Checking if the input string is nullif(input_sentence==nu...
publicStringreverseWords(Strings){if(s==null)returnnull;char[]a=s.toCharArray();intn=a.length;// step 1. reverse the whole stringreverse(a,0,n-1);// step 2. reverse each wordreverseWords(a,n);// step 3. clean up spacesreturncleanSpaces(a,n);}voidreverseWords(char[]a,intn){int...
2. Java Program to Reverse the Words of a String Whilereversing string content by words, the most natural way is to use aStringTokenizerand aStack. As you are aware thatStackis a class that implements an easy-to-uselast-in, first-out (LIFO)stack of objects. ...