编写一个Python程序，使用for循环来打印左箭头的字母图案。
rows = int(input("Enter Left Arrow Alphabets Pattern Rows = " ))
print("====The Left Arrow Alphabets Pattern====") alphabet = 65
for i in range(rows - 1, -1, -1): for j in range(i, -1, -1): print('%c' %(alphabet + j), end = ' ' ) print()
for i in range(rows): for j in range(i, -1, -1): print('%c' %(alphabet + j), end = ' ') print()
这个Python例子使用一个while循环来打印字母模式的左箭头。
rows = int(input("Enter Left Arrow Alphabets Pattern Rows = ")
print("====The Left Arrow Alphabets Pattern====") alphabet = 65 i = rows - 1
while(i >= 0): j = i while(j >= 0): print('%c' %(alphabet + j), end = ' ') j = j - 1 print() i = i - 1
i = 0
while(i < rows): j = i while(j >= 0): print('%c' %(alphabet + j), end = ' ') j = j - 1 print() i = i + 1
Enter Left Arrow Alphabets Pattern Rows = 12
====The Left Arrow Alphabets Pattern====
L K J I H G F E D C B A
K J I H G F E D C B A
J I H G F E D C B A
I H G F E D C B A
H G F E D C B A
G F E D C B A
F E D C B A
E D C B A
D C B A
C B A
B A
A
A
B A
C B A
D C B A
E D C B A
F E D C B A
G F E D C B A
H G F E D C B A
I H G F E D C B A
J I H G F E D C B A
K J I H G F E D C B A
L K J I H G F E D C B A
