摘要：
Given n points on a 2D plane, find the maximum number of points that lie on the same straight line. Example 1: Example 2: my code: can't determine the 阅读全文
摘要：
Count the number of prime numbers less than a non-negative number, n. Example: Approach #1: C++. Approach #2: Java. Approach #3: Python. 阅读全文