Python Easy and Clean Solution


  • 0
    D
    class Solution(object):
        def isOneEditDistance(self, s, t):
            """
            :type s: str
            :type t: str
            :rtype: bool
            """
            n1, n2 = len(s), len(t)
            def check(i):
                if i == n1: return i==n2-1
                if i == n2: return i==n1-1
                if s[i] == t[i]: return check(i+1)
                if n1  == n2: return s[i+1:] == t[i+1:]
                if n1 < n2: return s[i:] == t[i+1:]
                return s[i+1:] == t[i:]
            return check(0)

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