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  • python算法——打印菱形、对等三角、闪电

    1、打印菱形

    # -*- coding:utf-8 -*-
    # version:python3.7
    
    '''
       @ file  :print_graphics
       @ author:zhangyangyang
       @ create:2020/3/22
       @ remark:
    '''
    
    #打印菱形
    #version1:推导空格数和'*'数之间的关系,空格 + "*" = n(长度)
    
    n = 7
    e = n // 2
    for i in range(-e,e+1):    #定义空格数:[-3,3]
        #if i < 0:
        #    i = -i
        #print('{}{}'.format(' ' * i,(n - 2 * i) * '*'))
        print('{}{}'.format(' ' * abs(i),(n - 2 * abs(i)) * '*'))    #abs():求绝对值

    执行结果:
       *
      ***
     *****
    *******
     *****
      ***
       *
    #version2:居中打印
    
    n = 7
    e = n // 2
    for i in range(-e,e+1):
        print("{:^{}}".format('*' * (n - 2 * abs(i)),n))
    
    执行结果:
       *   
      ***  
     ***** 
    *******
     ***** 
      ***  
       *   

    2、打印对等三角形

    #vsrsion1
    
    n = 7
    e = n // 2
    for i in range(-e,e+1):
        #print(' ' * (e - abs(i)) + '{}'.format('*' * (2*abs(i) + 1)))
        print('{:^{}}'.format('*' * (2 * abs(i) + 1),n))
    
    执行结果:
    *******
     *****
      ***
       *
      ***
     *****
    *******
    #version2
    
    n = 7
    e = n // 2
    for i in range(-e,n-e):
        print('{}{}'.format(' ' * (e - abs(i)),'*' * (2 * abs(i) + 1)))
    
    执行结果:
    *******
     *****
      ***
       *
      ***
     *****
    *******

    3、打印闪电

    #打印闪电
    
    n = 7
    e = n // 2
    x = n - e
    for i in range(-e,x):
        if i < 0:
            print(' ' * -i + (x + i) * '*')
        elif i > 0:
            print(' ' * e + (x - i) * '*')
        else:
            print('*' * n)
    
    执行结果:
       *
      **
     ***
    *******
       ***
       **
       *
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  • 原文地址:https://www.cnblogs.com/zyybky/p/12551725.html
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