砝码称重问题

public class Poise {

	public static void main(String[] args)
	{
		int []poise = {1,2,5,10};
		int []num = {1,1,1,1};
		int max= 100;
		int flag[] = new int[101];
		
		flag[0] = 1;
		int start = 1;
		
		for(int i=0;i<poise.length;i++)
		{
			for(int j=1;j<=num[i];j++)
			{   
                                      //反向寻找
				for(int k=100;k>=poise[i];k--)
				{
					if(flag[k-poise[i]]==1)
						flag[k]=1;
				}
			}
		}
	
		for(int j=1;j<=100;j++)
		{
			if(flag[j]==1)
				System.out.println(j);
		}
	}
}