• 使用循环输出下面图形
1
2
3
4
5
6
7
8
9
    *
   ***
  *****
 *******
*********
 *******
  *****
   ***
    *
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
for i in range(1,10,2):    #正序输出
    b = '*' * i
    b=b.center(9)
    print(b)
#for j in range(7,0,-2):
#    c = '*' * j
#    c = c.center(9)
#    print(c)
for j in reversed(range(1,8,2)):   #反序输出
    c = '*' * j
    c = c.center(9)
    print(c)
#for j in range(1,8,2)[::-1]:
#    c = '*' * j
#    c = c.center(9)
#    print(c)

  • 三种反序手法，可以任选一种
1
2
3
4
5
6
7
8
9
    *    
   ***   
  *****  
 ******* 
*********
 ******* 
  *****  
   ***   
    *