1、int indexOf(String str) :返回第一次出现的指定子字符串在此字符串中的索引。 2、int indexOf(String str, int startIndex):从指定的索引处开始,返回第一次出现的指定子字符串在此字符串中的索引。 3、int lastIndexOf(String str) :返回在此字符串中最右边出现的指定子字符串的索引。 4、int lastIn...
首先,我们需要导入StringBuilder类: importjava.lang.StringBuilder; 1. 然后,我们可以使用以下代码将字符串反转: StringBuilderreversedString=newStringBuilder(inputString);reversedString.reverse(); 1. 2. 在这段代码中,我们创建了一个StringBuilder对象reversedString,并将原始字符串inputString传递给它。然后,我们调用了...
Here, we will reverse the string without using StringBuffer.reverse() method, consider the given program:import java.util.*; class ReverseString { public static void main(String args[]) { //declaring string objects String str="",revStr=""; Scanner in = new Scanner(System.in); //in...
On Crunchify, we have published more than 500 Java Tutorials and in this tutorial we will go over steps on how to reverse a string in Java? There are 7
The string in reverse order is: spmuj xof nworb kciuq ehT Flowchart: For more Practice: Solve these Related Problems: Write a Java program to reverse a string recursively without using any iterative loops. Write a Java program to recursively reverse each word in a sentence while preserving wo...
1. Java Program to Reverse the Characters of a String We canreverse a string by charactereasily, using aStringBuilder.reverse()method. StringblogName="HowToDoInJava.com";Stringreverse=newStringBuilder(string).reverse();System.out.println("Original String -> "+blogName);System.out.println("Rever...
importjava.util.Scanner; /* * Scanner:用于获取键盘录入数据 * public String nextline():获取键盘录入字符串数据 */ publicclassScannerLearn{ publicstaticvoidmain(String[] args){ Scannersc=newScanner(System.in); System.out.println("请输入数据:"); ...
Use the reverse_string() method in the main function to reverse the string and display the result. Example Here, we encapsulate the operations into functions exhibiting object oriented programming. Open Compiler import java.util.*; public class ReverseString { public static String reverse_string(Str...
leetcode reverse string( java) 思路:通过一次循环,将字符串的顺序的拼接,直接用了string类型的加法,超时。 借鉴他人:1.先将string转换为char数组,然后进行转换,最后将char数组转换为string, new String(ch); 2.遍历时,可只遍历一半,然后就行对调操作,时间复杂度O(n/2)...
// Method to reverse a string in Java using `Collections.reverse()` publicstaticStringreverse(Stringstr) { // return if the string is null or empty if(str==null||str.equals("")){ returnstr; } // create an empty list of characters and push every ...