[Codewar] Square Every Digit

https://www.codewars.com/kata/square-every-digit/train/java

Codewars: Train your coding skills

 

Instructions

 

Welcome. In this kata, you are asked to square every digit of a number.

For example, if we run 9119 through the function, 811181 will come out, because 92 is 81 and 12 is 1.

 

Note: The function accepts an integer and returns an integer

 

 

Solution

import java.util.stream.Stream;

public class SquareDigit {

  public int squareDigits(int n) {
      int[] digits = Stream.of(String.valueOf(n)
                    .split(""))
                    .mapToInt(Integer::parseInt)
                    .toArray();
                    
      String sum ="";
      for(int i=0; i<digits.length; i++)
      {
        sum += Integer.toString(digits[i] * digits[i]);  
      }
      int sum1 = Integer.parseInt(sum);
      return sum1;
  }
}