xinyu04

摘要： You are given a stream of points on the X-Y plane. Design an algorithm that: Adds new points from the stream into a data structure. Duplicate points a 阅读全文

摘要： You are given an integer finalSum. Split it into a sum of a maximum number of unique positive even integers. For example, given finalSum = 12, the fol 阅读全文

摘要： What is the smallest integer greater than 0 that can be written entirely with zeros and ones and is evenly divisible by 225? Solution 将其分解： $$ 225 = 5 阅读全文

摘要： You are given an array of words where each word consists of lowercase English letters. $word_A$ is a predecessor of $word_B$ if and only if we can ins 阅读全文