Given a singly linked list, find the middle element in it. If there are even number of nodes in the given linked list then return the

Linked list is a linear data structure. Each element in a linked list is an individual object. These individual objects are called nodes.

Insertion sort is an in-place sorting algorithm. Insertion sort works by picking each unsorted element and placing it in its correct sorted

Given an array of integers, nums, return all the triplets in the given array nums[i], nums[j], nums[k] such that i != j, i != k, and j != k

LRU cache stores items in the order in which they were requested. In LRU strategy, when the cache is full, the item that hasn't been used

A cache is a hardware or software component that acts as a temporary storage allowing fast access to data stored in it.