python打印杨辉三角
时间: 2023-10-12 19:13:31 浏览: 49
可以使用以下代码打印杨辉三角:
```python
def generate_triangle(num_rows):
triangle = []
for i in range(num_rows):
row = [1] * (i + 1)
for j in range(1, i):
row[j] = triangle[i-1][j-1] + triangle[i-1][j]
triangle.append(row)
return triangle
def print_triangle(triangle):
for row in triangle:
print(' '.join([str(num) for num in row]).center(80))
num_rows = 10
triangle = generate_triangle(num_rows)
print_triangle(triangle)
```
输出结果如下:
```
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
1 8 28 56 70 56 28 8 1
1 9 36 84 126 126 84 36 9 1
```
其中 `generate_triangle` 函数用于生成杨辉三角,`print_triangle` 函数用于打印杨辉三角。
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