摘要：
题目： Given a positive integer num, write a function which returns True if num is a perfect square else False. Note: Do not use any built-in library fun 阅读全文
摘要：
题目： Design a logger system that receive stream of messages along with its timestamps, each message should be printed if and only if it is not printed 阅读全文
摘要：
题目： Given two arrays, write a function to compute their intersection. Example:Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [2, 2]. Note: Each el 阅读全文
摘要：
题目： Given two arrays, write a function to compute their intersection. Example:Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [2]. Note: Each eleme 阅读全文
摘要：
题目： Given a stream of integers and a window size, calculate the moving average of all integers in the sliding window. For example, 链接： https://leetcod 阅读全文
摘要：
题目： Write a function that takes a string as input and reverse only the vowels of a string. Example 1:Given s = "hello", return "holle". Example 2:Give 阅读全文