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摘要： Department Highest SalaryTheEmployeetable holds all employees. Every employee has an Id, a salary, and there is also a column for the department Id.+-... 阅读全文

摘要： Basic Calculator IIImplement a basic calculator to evaluate a simple expression string.The expression string contains onlynon-negativeintegers, +, -, ... 阅读全文

摘要： Add Two NumbersYou are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes co... 阅读全文

摘要： Median of Two Sorted ArraysThere are two sorted arraysnums1andnums2of size m and n respectively. Find the median of the two sorted arrays. The overall... 阅读全文

摘要： Copy List with Random PointerA linked list is given such that each node contains an additional random pointer which could point to any node in the lis... 阅读全文

摘要： Best Time to Buy and Sell Stock IISay you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find the ... 阅读全文

摘要： Best Time to Buy and Sell StockSay you have an array for which theithelement is the price of a given stock on dayi.If you were only permitted to compl... 阅读全文

摘要： Populating Next Right Pointers in Each NodeGiven a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLi... 阅读全文

摘要： Text JustificationGiven an array of words and a lengthL, format the text such that each line has exactlyLcharacters and is fully (left and right) just... 阅读全文

摘要： LRU CacheDesign and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations:getandset.get(key)- Get... 阅读全文