2523. Closest Prime Numbers in Range | Leetcode Daily - Python

Learn how to solve the LeetCode problem "Closest Prime Numbers in Range" (Medium difficulty) with a clear, step-by-step explanation! This video covers two approaches: the Sieve of Eratosthenes and an optimized iterative solution that checks for primality on-the-fly. I break down the logic, code (in Python), and analyze the time and space complexity of each method.

We'll start by understanding the problem statement and then dive into the Sieve of Eratosthenes algorithm. You'll see how to generate a list of prime numbers efficiently. Then, I'll present a *more optimized* solution that avoids pre-generating all primes, saving both time and space. I'll explain why this optimized approach is preferable in many cases.

Whether you're preparing for coding interviews or just want to improve your problem-solving skills, this video is for you!

Key topics covered:

* Closest Prime Numbers in a Given Range
* Sieve of Eratosthenes
* Optimized Prime Number Checking (`is_prime` function)
* Time Complexity Analysis (Big O notation)
* Space Complexity Analysis (Big O notation)
* Python Implementation
* LeetCode Problem Walkthrough
* Algorithm Design

#leetcode #python #algorithms #codinginterview #primes #datastructures