hdoj 2032

Problem Description

还记得中学时候学过的杨辉三角吗?具体的定义这里不再描述,你可以参考以下的图形:
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1

Input

输入数据包含多个测试实例,每个测试实例的输入只包含一个正整数n(1<=n<=30),表示将要输出的杨辉三角的层数。

Output

对应于每一个输入,请输出相应层数的杨辉三角,每一层的整数之间用一个空格隔开,每一个杨辉三角后面加一个空行。

Sample Input

2 3

Sample Output

1

1 1

1

1 1

1 2 1

# include <stdio.h>
int main()
{
int n,a[31][31],i,j;
a[1][1]=1;
for (i=2;i<=30;i++)
{
for (j=2;j<i;j++)
a[i][j]=a[i-1][j-1]+a[i-1][j];
a[i][1]=a[i][j]=1;
}
while (scanf("%d",&n)+1)
{
for (i=1;i<=n;i++)
{
for (j=1;j<i;j++)
printf ("%d ",a[i][j]);
printf ("%d",a[i][j]);
putchar(‘\n‘);
}
putchar(‘\n‘);
}
return 0;
}

时间: 2024-10-08 10:28:06

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