Question

How to reverse a string using character array in Java

Answer 1

public class MyClass
{
     public static String reverse(String str) {
        int len = str.length();
 
        char[] arr = new char[len];
 
        for (int i = 0; i < len; i++) {
            arr[len - i - 1] = str.charAt(i);
        }

        return String.copyValueOf(arr);
    }
 
    public static void main(String[] args)
    {
        String str = "java9";

        str = reverse(str);
 
        System.out.println(str);
    }
}




/*
run:

9avaj

*/

 

70+ SQL courses for beginners and professionals