咿呀咿呀呦__

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

咿呀咿呀呦__

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

咿呀咿呀呦__

Given an unsorted integer array, find the smallest missing positive integer. Example 1:...

咿呀咿呀呦__

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

咿呀咿呀呦__

Find the contiguous subarray within an array (containing at least one number) which has...

咿呀咿呀呦__

Write a function to delete a node (except the tail) in a singly linked list, given only...

咿呀咿呀呦__

Given a sorted array and a target value, return the index if the target is found. If no...

咿呀咿呀呦__

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

咿呀咿呀呦__

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

咿呀咿呀呦__

Given a sorted array, remove the duplicates in-place such that each element appear only...

咿呀咿呀呦__

Invert a binary tree. to And an iterative version using my own stack: Complexity Analys...

咿呀咿呀呦__

You are given two non-empty linked lists representing two non-negative integers. The di...

咿呀咿呀呦__

Given an array of integers, return indices of the two numbers such that they add up to ...