How to find if the given Strings are Isomorphic?
By: House Of Codes
Tags: Programming, Coding, Java, Software Development, Interview

How to find if the given Strings are Isomorphic?

Day 48— 100 Days to LinkedIn, Yahoo, Oracle

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100 Days to LinkedIn, Yahoo, Oracle

Introduction

Hey guys, Today is day 48 of the 100 Days to LinkedIn Challenge.

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If you are Preparing for your Interview. Even if you are settled down in your job, keeping yourself up-to-date with the latest Interview Problems is essential for your career growth. Start your prep from Here!

Last month, I have been researching to find out the Frequently asked problems from these Companies. I have compiled 100 of these questions, I am not promising you that you will get these questions in your interview but I am confident that most of these “interview questions” have similar logic and employs the same way of thinking from these set of challenges.

Before we move on to the first problem, If you are wondering why I chose LinkedIn, Yahoo and Oracle over FAANG are because I have completed a challenge Focusing on Amazon and Facebook Interview.

New Day, New Strength, New Thoughts

Day 48 — Isomorphic String🏁

AIM

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

Two strings 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🕶

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

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

Output: true

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Code👇

Edge Cases

Check if the length of the two given strings are unequal. If so you can directly say that, the Strings can’t be isomorphic.

Algorithm

Create 2 hashmap. Traverse the Strings. At each index, add the first strings character as the key and the second string character to be the Value of that in map1, do the vice versa in map2. At each index also check if the current two characters are the same combination. i,e if a key value pair exists, then check if the current two characters are the same values in the hash map. Since a character cannot be mapped to another instance. Return True at the end of the traversal🔚

Complexity Analysis

Time Complexity :

Space Complexity :

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Further Reading

4 Incredibly Useful Linked List Tips for Interview

Top 25 Amazon SDE Interview Questions

Do you think you really know about Fibonacci Numbers?

9 Best String Problems Solved using C Programming

One Does not Simply Solve 50 Hacker Rank Challenges

End of the Line

You have now reached the end of this article. Thank you for reading it. Good luck with your Programming Interview!

If you come across any of these questions in your interview. Kindly Share it on the comments section below. I will be thrilled to read them.

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