205. Isomorphic Strings

📋 Đề Bài

Given two strings s and t, determine if they are isomorphic.

Two strings s and t are isomorphic if the characters in s can be replaced to get t.

All occurrences of a character must be replaced with another character while preserving the order of characters. No two characters may map to the same character, but a character may map to itself.

Example 1:

Input: s = "egg", t = "add"
Output: true

Example 2:

Input: s = "foo", t = "bar"
Output: false

Example 3:

Input: s = "paper", t = "title"
Output: true

Constraints:

1 <= s.length <= 5 * 10⁴
t.length == s.length
s and t consist of any valid ascii character.

💻 Lời Giải

Python 0205-isomorphic-strings.py

class Solution:
    def isIsomorphic(self, s: str, t: str) -> bool:
        return len(set(s)) == len(set(zip(s, t))) == len(set(t))