摘要：题目：Given an arraynums, there is a sliding window of sizekwhich is moving from the very left of the array to the very right. You can only see theknumbe... 阅读全文

摘要：Basic Calculator IImplement a basic calculator to evaluate a simple expression string.The expression string may contain open(and closing parentheses),... 阅读全文

摘要：Say you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find the maximum profit. You may complete a... 阅读全文

摘要：Say you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find the maximum profit. You may complete a... 阅读全文

摘要：Implement Trie (Prefix Tree)Implement a trie withinsert,search, andstartsWithmethods.Note:You may assume that all inputs are consist of lowercase lett... 阅读全文

摘要：题目：Say you have an array for which theithelement is the price of a given stock on dayi.If you were only permitted to complete at most one transaction ... 阅读全文

摘要：题目：You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping... 阅读全文