超级码力初赛第二场 五字回文

输入：s = "abcba"
输出：1

输入：s = "abcbabcccb"
输出：2
解释：形似”abcba“的字符串有”abcba“和”cbabc“

class Solution:
"""
@param s: The given string
@return: return the number of Five-character palindrome
"""

def Fivecharacterpalindrome(self, s):
    # write your code here
    result = 0
    s_len = len(s)
    for x in range(2, s_len-2):
        if s[x+1] == s[x-1] and s[x+2] == s[x-2] and s[x] != s[x+1] and  s[x] != s[x+2] and s[x+1] != s[x+2]:
            result = result+1
    return result