// Kyle Thayer, CSE 142
// This program counts the occurence of digits in a number
// For example: 252 has 2 2's and 1 5.
public class CountDigits{
   public static void main(String[] args){
      int number = 878432578;
      
      // an array to hold the counts of each digit
      // digitCount[0] will hold the count of 0's
      // digitCount[1] will hold the count of 1's
      // etc.
      int[] digitCount = new int[10];
      
      //while loop to go through each digit of number
      while(number > 0){
         // get the next digit
         int digit = number % 10;
         // remove the last digit
         number = number /10;
         // add the count of the matching digit
         // eg. if digit was 1, this adds one to
         //      digitCount[1]
         digitCount[digit]++;
      }
      
      // loop through the 10 digits in the digit counter
      for(int i = 0; i < digitCount.length; i++){
         // print out the count of the digit i
         // for example, when i is 1, then the digit is 1
         // and the count is saved in digitCount[1]
         System.out.println(i + ": " + digitCount[i]);
      }
   }
}