Isomorphic Strings

In this article, we will solve the problem of finding whether the two given strings are isomorphic.

Problem Statement:

Given two strings s1 and s2, find if they are isomorphic. Two strings are isomorphic if the characters in s1 can be replaced to get s2.

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

Solution:

To determine if two strings are isomorphic, we can use two hash maps to store the mappings of characters from s1 to s2 and vice versa. We will iterate through the strings and check the mappings to ensure they are consistent.

Time Complexity: O(N)

Space Complexity: O(1)