Given a linked list, reverse the nodes of a linked list k at a time and ...

Reverse a singly linked list. Example: Follow up: A linked list can be r...

Given an unsorted integer array, find the smallest missing positive inte...

Merge k sorted linked lists and return it as one sorted list. Analyze an...

Find the contiguous subarray within an array (containing at least one nu...

Write a function to delete a node (except the tail) in a singly linked l...

Given a sorted array and a target value, return the index if the target ...

Given an array of integers, every element appears twice except for one. ...

Given an array and a value, remove all instances of that value in-place ...