摘要：
You are given an array happiness of length n, and a positive integer k. There are n children standing in a queue, where the ith child has happiness va 阅读全文
摘要：
You are given a 0-indexed integer array batteryPercentages having length n, denoting the battery percentages of n 0-indexed devices. Your task is to t 阅读全文
摘要：
Alice and Bob want to water n plants in their garden. The plants are arranged in a row and are labeled from 0 to n - 1 from left to right where the it 阅读全文