桶排序（简单版）

import java.util.Arrays;

public class Main {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int[] a = {9,5,4,3,7,3,2,1,2};//数据范围是0-10
        int[] b = new int[11];
        for(int i = 0;i<a.length;i++){
            b[a[i]]++;
        }
        for(int i = 0;i<b.length;i++){
            for(int j = 1;j<=b[i];j++){
                System.out.println(i);
            }
        }    
    }
}