原文: https://beginnersbook.com/2017/09/java-program-to-reverse-words-in-a-string/
该程序反转字符串的每个单词并将反转的字符串显示为输出。例如,如果我们输入一个字符串"reverse the word of this string",那么程序的输出将是:"esrever eht drow fo siht gnirts"。
要了解此程序,您应该具有以下 Java 编程主题的知识:
示例:使用方法反转String中的每个单词
在本程序中,我们首先使用split()方法将给定的字符串拆分为子字符串。子串存储在String数组words中。程序然后使用反向的for循环反转子串的每个单词。
public class Example{public void reverseWordInMyString(String str){/* The split() method of String class splits* a string in several strings based on the* delimiter passed as an argument to it*/String[] words = str.split(" ");String reversedString = "";for (int i = 0; i < words.length; i++){String word = words[i];String reverseWord = "";for (int j = word.length()-1; j >= 0; j--){/* The charAt() function returns the character* at the given position in a string*/reverseWord = reverseWord + word.charAt(j);}reversedString = reversedString + reverseWord + " ";}System.out.println(str);System.out.println(reversedString);}public static void main(String[] args){Example obj = new Example();obj.reverseWordInMyString("Welcome to BeginnersBook");obj.reverseWordInMyString("This is an easy Java Program");}}
输出:
Welcome to BeginnersBookemocleW ot kooBsrennigeBThis is an easy Java ProgramsihT si na ysae avaJ margorP
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