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. Input: nums = [1,1,1,3,3,4,3,2,4,2] Output: true Input: nums = [3,1,4,2] Output: false

#### Category: Data Structures and Algorithms

Data structures are used to organize and store data in a way that is efficient for the tasks you want to perform. Some common data structures include arrays, linked lists, stacks, queues, and trees. Each data structure has its own characteristics and is suitable for different types of applications. For example, an array is a good choice for storing and accessing a large number of items quickly, while a linked list is better for inserting and deleting items frequently.

Algorithms are sets of instructions that are used to solve problems or perform specific tasks. They are designed to be efficient and to use resources (such as time and space) in the most optimal way possible. Some common algorithms include sorting algorithms (such as quicksort and mergesort), searching algorithms (such as binary search), and graph algorithms (such as depth-first search and breadth-first search).

Data structures and algorithms are important because they allow you to store and manipulate data in a way that is efficient and scalable. By understanding different data structures and algorithms, you can choose the right ones for your specific needs, which can greatly improve the performance and efficiency of your programs.