text: Find the smallest number whose sum of digits is N | Java program to find the smallest number whose sum of digits is also N ; Function to get sum of digits ; Function to find the smallest number whose sum of digits is also N ; Checking if number has sum of digits = N ; Driver code
code: class GFG { static int getSum ( int n ) { int sum = 0 ; while ( n != 0 ) { sum = sum + n % 10 ; n = n / 10 ; } return sum ; } static void smallestNumber ( int N ) { int i = 1 ; while ( 1 != 0 ) { if ( getSum ( i ) == N ) { System . out . print ( i ) ; break ; } i ++ ; } } public static void main ( String [ ] args ) { int N = 10 ; smallestNumber ( N ) ; } }