솜씨좋은장씨

Count the number of prime numbers less than a non-negative number, n. Example: Input: 10 Output: 4 Explanation: There are 4 prime numbers less than 10, they are 2, 3, 5, 7. Solution class Solution: def getPrimaryNum_Eratos(N): nums = [True] * (N + 1) for i in range(2, len(nums) // 2 + 1): if nums[i] == True: for j in range(i+i, N, i): nums[j] = False return [i for i in range(2, N) if nums[i] == ..