Question

Coding 2: Let your user input an integer of any length.

Define a function that takes the inputted integer and removes all the “1”s from it, then prints out the result as an integer. Tell the user how many “1”s were removed.

Hint: be careful with type conversions!

Answer 1

import java.util.Scanner;

public class RemoveInt {
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       System.out.println("Enter integer: ");
       int n = sc.nextInt();
       n = removeInt(n);
       System.out.println("Aftrer removing 1's n: " + n);
   }

   private static int removeInt(int n) {
       String res = "";
       String num = n + "";
       int count = 0;
       //iterating through each char
       for (int i = 0; i < num.length(); i++) {
           // if it is not 1 than add to another variable
           // if it is 1 increase the count
           if (num.charAt(i) != '1') {
               res = res + num.charAt(i);
           } else {
               count++;
           }
       }
       System.out.println(count + " 1's are removed from " + n);
       //converting string to integer
       return Integer.parseInt(res);
   }
}

Note : Please comment below if you have concerns. I am here to help you

If you like my answer please rate and help me it is very Imp for me