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Solution: Count Primes

Explore how to count prime numbers strictly less than a given integer by implementing the Sieve of Eratosthenes. Learn to optimize primality checks with this number theory algorithm and understand its time and space complexities to solve coding interview problems effectively.

Statement

Given an integer n, return the count of prime numbers that are strictly less than n.

Constraints:

  • 00 \leq n 5×106\leq 5 \times 10^6 ...