"""
打印各种三角形图案
*
**
***
****
*****
*
**
***
****
*****
*
***
*****
*******
*********
"""
row = int(input(
'请输入行数: '))
for i
in range(row):
for _
in range(i +
1):
print(
'*', end=
'')
print()
for i
in range(row):
for j
in range(row):
if j < row - i -
1:
print(
' ', end=
'')
else:
print(
'*', end=
'')
print()
for i
in range(row):
for _
in range(row - i -
1):
print(
' ', end=
'')
for _
in range(
2 * i +
1):
print(
'*', end=
'')
print()
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