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problem https://leetcode.com/problems/contains-duplicate/ Contains Duplicate - LeetCode Can you solve this real interview question? Contains Duplicate - Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct. Example 1: Input: nums = [1,2,3,1] Output: true Ex leetcode.com Given an integer array nums, return true if..

problem https://leetcode.com/problems/best-time-to-buy-and-sell-stock/ Best Time to Buy and Sell Stock - LeetCode Can you solve this real interview question? Best Time to Buy and Sell Stock - 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 a single day to buy one stock and choosin leetcode.com You are given ..

problem https://leetcode.com/problems/two-sum/ Two Sum - LeetCode Can you solve this real interview question? Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, and you may not leetcode.com Given an array of integers nums and an integer target, return i..