Decode the Message | Python Interview Questions | Data Engineer Interview Question | FAANG Interview

Опубликовано: 14 Март 2026
на канале: Grow with Data
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Full Video:    • Decode the Message | Python Interview Ques...  

Video 245: In this video, we are going to decode a message

You are given the strings key and message, which represent a cipher key and a secret message, respectively. The steps to decode message are as follows:
1. Use the first appearance of all 26 lowercase English letters in key as the order of the substitution table.
2. Align the substitution table with the regular English alphabet.
3. Each letter in message is then substituted using the table.
4. Spaces ' ' are transformed to themselves.

In this video we are going to discuss simple approach to address this question

** Approach 1: Basic Looping Logic **
In the first approach, we use a simple loop to construct the substitution table and decode the message. This method is straightforward and easy to understand, making it a great choice for beginners.

** Approach 2: Smarter Coding **
The second approach optimizes the decoding process, making the code slightly more concise while achieving the same result. It's a demonstration of how small tweaks can enhance readability and performance.


For a comprehensive understanding and practical demonstration, be sure to watch the entire video. Happy coding!

code: https://github.com/jeganpillai/python...

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