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StringReverse.java

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package String;

import java.util.Scanner;

public class StringReverse {

public static String reverse(String str) {

StringBuilder rev = new StringBuilder("");

if(str==null)return null;

for(int i=str.length()-1;i>=0;i--) {

rev.append(str.charAt(i));

}

return rev.toString();

}

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

System.out.println("Enter the String : ");

String s=sc.nextLine();

System.out.println("Result: " + reverse(s));

sc.close();

}