数字三角形完整代码怎么补・_・?

Question

 

Answer 1

n = int(input())

k = 1
c = 0
s = ''
for i in range(1, (n * n + n) // 2 + 1):
    if k % 2 != 0:
        s = s+str(i)+" "
    else:
        s = str(i) + " " + s
    c += 1
    if c == k:
        print(s)
        s = ''
        k = k + 1
        c = 0