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https://leetcode.com/problems/lru-cache/ LRU Cache - LeetCode Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview. leetcode.com Design a data structure that follows the constraints of a Least Recently Used (LRU) cache. Implement the LRUCache class: LRUCache(int capacity) Initialize the LRU cache with positiv..

Given a non-empty array of integers nums, every element appears twice except for one. Find that single one. You must implement a solution with a linear runtime complexity and use only constant extra space. Example 1: Input: nums = [2,2,1] Output: 1 Example 2: Input: nums = [4,1,2,1,2] Output: 4 Example 3: Input: nums = [1] Output: 1 Constraints: 1

https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/ Convert Sorted Array to Binary Search Tree - LeetCode Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview. leetcode.com Given an integer array nums where the elements are sorted in ascending order, convert it to a height-balanced binar..

https://leetcode.com/problems/best-time-to-buy-and-sell-stock/ Best Time to Buy and Sell Stock - LeetCode Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview. leetcode.com You are given an array prices where prices[i] is the price of a given stock on the ith day. You want to maximize your profit by choosing ..