计算并输出杨辉三角

 

public class sentence {
    public static void main(String[] args) {
        int i,j,level=7;
        int[] [] iaYong=new int[level][];
        System.out.println("杨辉三角形");
        for(i=0;i< iaYong.length;i++)
            iaYong[i]=new int[i+1];
        iaYong[0][0]=1;
        for(i=1;i<iaYong.length;i++) {
            iaYong[i][0] = 1;
            for (j = 1; j < iaYong[i].length - 1; j++)
                iaYong[i][j] = iaYong[i - 1][j - 1] + iaYong[i - 1][j];
            iaYong[i][iaYong[i].length - 1] = 1;
        }
        for(int[] row:iaYong)
        {
            for(int col:row)
                System.out.print(col+" ");
            System.out.println();
        }
    }
}