Idea
Based on the image and context provided, I can see a problem related to primality testing. The code shown in the image is a simple but inefficient approach to check if a number is prime. The DSA pattern suggested is the Sieve of Eratosthenes, which is much more efficient for primality testing, especially when checking multiple numbers.
I need to explain how to implement the Sieve of Eratosthenes to efficiently check for prime numbers, provide the approach in bullet points, and analyze the time and space complexity.
