基本编程练习第二波

1、用* 表示一个三角形

## 倒三角形
line = 5

while line > 0:
    i = line
    while i > 0:
        print('*',end="")
        i -= 1
    print()
    line -= 1

## 正三角形

line = 1

while line<=5:
    i = line
    while i>0:
        print('*',end="")
        i -= 1
    print()
    line += 1
## 正三角形

line = 1

while line <=5:
    tmp = 1
    while tmp <= line:
        print('*',end='')
        tmp += 1
    print()
    line += 1

2、用*表示一个长方形

#_author:Administrator
#date: 2018/1/6

height = int(input('高：'))
width = int(input('宽：'))

# num_height = 1
# while num_height <= height:
#     num_width = 1
#     while num_width <= 
#         print("*",end="")
#         num_width += 1
#     print()
#     num_height += 1

while height > 0:
    num_width = width
    while num_width > 0:
        print('*',end='')
        num_width -= 1
    print()
    height -= 1

3、九九乘法表

fst = 1

while fst <= 9:
    sec = 1
    while sec <= fst:
        print( str(fst)  +'*' +str(sec) + '=' +str(sec * fst), end='	')
        sec += 1
    print()
    fst += 1