javaPAT1021个位数统计

import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;




public class Main {

	public static int SIZE=100;
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		HashMap<Integer,Integer> map=new HashMap<Integer,Integer>();
		Scanner in=new Scanner(System.in);
		int n=in.nextInt();
		int[] arr=new int[SIZE];
		int cnt=0;
		while(n>0)
		{
			arr[cnt++]=n%10;
			n/=10;
		}
		for(int i=0;i<cnt;i++)
			System.out.println(arr[i]);
		for(int i=0;i<cnt;i++)
		{
			if(map.get(arr[i])==null)
				map.put(arr[i],1);
			else
			{
				int m=map.get(arr[i]);
				map.put(arr[i],++m);
			}
		}
		for (Integer key : map.keySet()) {
			System.out.println(key+":"+map.get(key));
		}

	}

}