Using a Robot to Print the Lexicographically Smallest String | Leetcode 2434 (Greedy + Stack) Python

In this video, we solve Leetcode Problem 2434: "Using a Robot to Print the Lexicographically Smallest String".

We use a Greedy approach combined with a Stack to simulate the robot’s behavior. The goal is to transform a string using push and pop operations to print the smallest possible lexicographical string.

🔍 Topics Covered:
Problem Explanation
Step-by-step Greedy Algorithm
Stack Simulation
Counter (Frequency Map) in Python
Lexicographical String Handling

📚 Tags:

Greedy Algorithm
Stack Data Structure
Leetcode Interview Questions
String Manipulation in Python

👇 Watch till the end for a dry-run and explanation of why the approach works!

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🏷 Tags
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[ashishmishra]

I have become your new subscriber. I have a request for you: please divide all the leetcode problems you have into playlist such as array, two pointers, prefix sum, string etc. This way, if a new candidate wants to learn DSA from you and then segregation help beginners.
By the way, thank you!