python（7）- 小程序练习：循环语句for，while实现99乘法表

打印99乘法表

for 循环语句实现：

1 for i in range(1,10):
2     for j in range(1,10):
3         print(j,"x",i,"=",i*j,"\t",end="")   #因为print自动换行，end="" 为结尾不换行
4         if i==j:
5             print("")  #此处是结尾换行
6             break

while循环语句实现：

 1 i=0
 2 j=0
 3 while i <9:
 4     i+=1
 5     while j <9:
 6         j += 1
 7         print(j, "x", i, "=", i * j, "\t", end="")
 8         if i==j:
 9             print("")
10             j=0
11             break

输出结果：

1 1 x 1 = 1
2 1 x 2 = 2   2 x 2 = 4
3 1 x 3 = 3   2 x 3 = 6   3 x 3 = 9
4 1 x 4 = 4   2 x 4 = 8   3 x 4 = 12  4 x 4 = 16
5 1 x 5 = 5   2 x 5 = 10  3 x 5 = 15  4 x 5 = 20  5 x 5 = 25
6 1 x 6 = 6   2 x 6 = 12  3 x 6 = 18  4 x 6 = 24  5 x 6 = 30  6 x 6 = 36
7 1 x 7 = 7   2 x 7 = 14  3 x 7 = 21  4 x 7 = 28  5 x 7 = 35  6 x 7 = 42  7 x 7 = 49
8 1 x 8 = 8   2 x 8 = 16  3 x 8 = 24  4 x 8 = 32  5 x 8 = 40  6 x 8 = 48  7 x 8 = 56  8 x 8 = 64
9 1 x 9 = 9   2 x 9 = 18  3 x 9 = 27  4 x 9 = 36  5 x 9 = 45  6 x 9 = 54  7 x 9 = 63  8 x 9 = 72  9 x 9 = 81