LeetCode_素数筛_中等_204.计数质数

星许辰发布时间：2022-04-08 15:42:20 ，浏览量：2

1.题目
2.思路
3.代码实现（Java）

1.题目

给定整数 n ，返回所有小于非负整数 n 的质数的数量。

示例 1：输入：n = 10 输出：4 解释：小于 10 的质数一共有 4 个, 它们是 2, 3, 5, 7 。

示例 2：输入：n = 0 输出：0

示例 3：

输入：n = 1 输出：0

提示： 0

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LeetCode_素数筛_中等_204.计数质数

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