Given an array nums and a value val, remove all instances of that value in-place and return the new length. Do not allocate extra space…
Suppose you have a random list of people standing in a queue. Each person is described by a pair of…
Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water…
Given a collection of intervals, merge all overlapping intervals. Example 1: Input: [[1,3],[2,6],[8,10],[15,18]] Output: [[1,6],[8,10],[15,18]] Explanation: Since intervals [1,3] and…
Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. Example: Input: [ 1->4->5,…
Given an array nums of n integers where n > 1, return an array output such that output[i] is equal to the product of all the elements of nums except nums[i]. Example: Input:…
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