算法竞赛——回文串镜像串求解(附python代码)

题目:求解字符串是否是回文串或者镜像串(回文串是指正序逆序都一样,镜像串是指镜像后字符串一样),其中,镜像字典如下:

{'A':'A', 'E':'3', 'H':'H', 'I':'I', 'J':'L', 'L':'J',
          'M':'M', 'O':'O', 'S':'2', 'T':'T', 'U':'U', 'V':'V',
          'W':'W', 'X':'X', 'Y':'Y', 'Z':'5','1':'1','2':'S','5':'Z','8':'8'}

直接上代码吧,也很简单。

"""
输入一个字符串,判断是否是回文串或者镜像串
算法竞赛入门经典(第2版)
P48例题3-3
"""
#coding:utf-8

def huiwenchuan(string):
    return string == string[::-1]

def jingxiangchuan(string, dt):
    isjingxiangchuan = False
    for i in range(0,len(string)//2):
        if string[i] in dt.keys() and (string[len(string)-1-i] in dt[string[i]]):
            isjingxiangchuan = True
        else:
            isjingxiangchuan = False
        return isjingxiangchuan


if __name__ == '__main__':
    string = "madam"
    #回文串
    print(huiwenchuan(string))
    #镜像串
    #string = '2A3MEBS'
    dt = {'A':'A', 'E':'3', 'H':'H', 'I':'I', 'J':'L', 'L':'J',
          'M':'M', 'O':'O', 'S':'2', 'T':'T', 'U':'U', 'V':'V',
          'W':'W', 'X':'X', 'Y':'Y', 'Z':'5','1':'1','2':'S','5':'Z','8':'8'}
    print(jingxiangchuan(string=string, dt=dt))

Ref:
算法竞赛入门经典第二版

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