个位数统计 (15)

算法Java：

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		String s = sc.nextLine();
		char a[] = s.toCharArray();
		int b[] = new int[10];
		
		for (int i = 0; i < a.length; i++) {
			b[a[i]-'0']++;
		}
		
		for (int i = 0; i < 10; i++) {
			if(b[i] != 0)
				System.out.println(i+":"+b[i]);
		}
	}
}