Example 008: 99 multiplication table

example 008: multiplication table

subject ： Output 9*9 Multiplication table .

  Program analysis ： Branch and column considerations , common 9 That's ok 9 Column ,i The control line ,j Control the column .

#  The first i Yes i Column ,range It is a semi closed and semi open interval, so range Need to go to i+1
#  For better output , Set the result of multiplication to %-2d That accounts for 2 position ,- Indicates left alignment , No addition - Is the default right alignment   end='' That is, no line break after output 

The code is as follows ：

for i in range(1, 10):
    for j in range(1, i + 1): #  The first i Yes i Column ,range It is a semi closed and semi open interval, so range Need to go to i+1
        print('%d*%d=%-2d ' % (i, j, i * j), end='')  #  For better output , Set the result of multiplication to %-2d That accounts for 2 position ,- Indicates left alignment , No addition - Is the default right alignment   end='' That is, no line break after output 
    print()  # Line break 

The output is as follows ：

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