Question

I want to know how I can replace 0 with 1 and 1 with 0 in a string in java,

so if I have

String x = "10010"

I want String y = "01101"

and I want to do it for any String so if i have a longer one like 010000010 it would do the same with no issues

I tried doing .replace but then it became 11111 or 00000.

Answer 1

import java.util.Arrays;
import java.util.Scanner;
public class allTest {

   public static void main(String[] args)
   {
       String x = "010000010";
       String temp1=x.replace('0', 'x'); //temporary variable for replace
       String temp2=temp1.replace('1', '0');
       String new_str=temp2.replace('x', '1');
       System.out.println(new_str);
      
   }
}