python 2018全国自学考试第5章 第20题 ABCD四种模式的解题

# a-1
# for i in range(1, 8):
#     print()
#     for k in range(1, i):
#         print(k, end=" ")
#
# # a-2
# for j in range(1, 9):
#     print()
#     for k1 in range(j-1, 1, -1):
#         print(j-k1, end=" ")

for i in range(2, 8):
    print()
    for k in range(i + 1, 9, 1):
        print(abs(i - k), end=" ")

for i in range(1, 9):
    print()
    # 这个步幅和起始点是怎么弄的呢？？？不过它的模式成功了
    for j in range(8, 0, -5):
        print((j-i) * "  ", end="")
    
    for k in range(i - 2, 0, -1):
        print(k, end=" ")

for i in range(2, 8):
    print()
    for j in range(11, 0, -2):
        print((i - j) * " ", end="")
        # print(i - j, end=" ")
    for k in range(i + 1, 9, 1):
        print(abs(i - k), end=" ")

结果