摘要：
题目如下： Given an array of integers arr of even length n and an integer k. We want to divide the array into exactly n / 2 pairs such that the sum of each 阅读全文
摘要：
题目如下： Given a string path, where path[i] = 'N', 'S', 'E' or 'W', each representing moving one unit north, south, east, or west, respectively. You star 阅读全文
摘要：
题目如下： Given a binary array nums, you should delete one element from it. Return the size of the longest non-empty subarray containing only 1's in the r 阅读全文
摘要：
题目如下： Given two positive integers n and k. A factor of an integer n is defined as an integer i where n % i == 0. Consider a list of all factors of n s 阅读全文
摘要：
题目如下： Given an array of unique integers salary where salary[i] is the salary of the employee i. Return the average salary of employees excluding the m 阅读全文
摘要：
题目如下： Your country has an infinite number of lakes. Initially, all the lakes are empty, but when it rains over the nth lake, the nth lake becomes full 阅读全文