- To reverse a string
User Input: Hello World
Output: dlroW olleH
import java.util.Scanner;
public class ReverseString {
public static void main(String []args) {
String s1,reverse="";
Scanner userInput = new Scanner(System.in);
System.out.print("Enter Your string : ");
s1 = userInput.nextLine();
int l=s1.length()-1;
while(l!=-1) {
reverse+=s1.charAt(l--);
}
System.out.println("Your reversed string : "+reverse);
}
}
Enter Your string : fun with code Your reversed string : edoc htiw nufProgram
Main Logic :
// varibale 'l' holds length of string - 1 (since index starts from 0)
while(l!=-1) {
reverse+=s1.charAt(l--);
}
Concept
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