各種方式輸出九九乘法表（從新學習python）

# 第一種
for row in range(1, 10):
    for col in range(1, row + 1):
        print('{}x{}={:<2}'.format(col, row, row * col), end=' ')
    print('')

# 第二種
for row in range(9, 0, -1):
    for col in range(1, row + 1):
        print('{}x{}={:<2}'.format(col, row, row * col), end=' ')
    print('')

# 第三種
for row in range(1,10):
    for col in range(9,0,-1):
        if row < col:
            print(" " * 8,end="")
        else:
            print("{}*{}={:>2}".format(row, col, row * col), end="  ")
    print()

# 第四種
for row in range(9,0,-1):
    for col in range(9,0,-1):
        if row < col:
            print(" " * 8, end="")
        else:
            print("{}*{}={:>2}".format(row, col, row * col), end="  ")
    print()

# 第五種
row = 1
while row <= 9:
    col = 1
    while col <= row:
        print("{}x{}={:>2}".format(col, row, row * col), end="  ")
        col += 1
    print()
    row += 1

# 第六種
row = 9
while row >= 1:
    col = 1
    while col <= row:
        print("{}x{}={:>2}".format(col, row, row * col), end="  ")
        col += 1
    print()
    row -= 1

# 第七種
row = 1
while row <= 9:
    col = 9
    while col >= 1:
        if row < col:
            print(" " * 8,end="")
        else:
            print("{}x{}={:>2}".format(col, row, row * col), end="  ")
        col -= 1
    print()
    row += 1

# 第八種
row = 9
while row >= 1:
    col = 9
    while col >= 1:
        if row < col:
            print(" " * 8,end="")
        else:
            print("{}x{}={:>2}".format(col, row, row * col), end="  ")
        col -= 1
    print()
    row -= 1