请输入行数:12
0
12
345
6789
01234
567890
1234567
89012345
678901234
5678901234
56789012345
678901234567
i = 0
line = int(input("请输入行数:"))
for j in range(line):
for _ in range(_______________):
print(" ", end = "")
for _ in range(j + 1):
print(i, end = "")
i += 1
if i >= 10:
i = 0
print()
