Implement A Queue Using Stacks - The Queue ADT ("Implement Queue Using Stacks" on LeetCode) скачать в хорошем качестве

Implement A Queue Using Stacks - The Queue ADT ("Implement Queue Using Stacks" on LeetCode)

Free 5-Day Mini-Course: https://backtobackswe.com Try Our Full Platform: https://backtobackswe.com/pricing 📹 Intuitive Video Explanations 🏃 Run Code As You Learn 💾 Save Progress ❓New Unseen Questions 🔎 Get All Solutions Question: Implement a queue (a FIFO structure...first-in-first-out) only using stacks internally as efficiently as possible. This problem is classic and well known but as always, I want to walk you through the thought process and not just present the solution. Complexities n is the total items between the 2 stacks (in the overarching queue) Time: O( 1 ) - amortized (for enqueue and dequeue operations) Amortized time is the way to express the time complexity when an algorithm has the very bad time complexity only once in a while besides the time complexity that happens most of time (  / amortized-time-in-the-time-complexity-of-a...  . The motivation for amortized analysis is that looking at the worst-case run time per operation, rather than per algorithm, can be too pessimistic. (https://en.wikipedia.org/wiki/Amortiz.... Space: O( n ) We upper bound space to the maximum amount of items that we will ever store. ++++++++++++++++++++++++++++++++++++++++++++++++++ HackerRank:    / @hackerrankofficial   Tuschar Roy:    / tusharroy2525   GeeksForGeeks:    / @geeksforgeeksvideos   Jarvis Johnson:    / vsympathyv   Success In Tech:    / @successintech   ++++++++++++++++++++++++++++++++++++++++++++++++++ This question is number 19.1 in "Elements of Programming Interviews" by Adnan Aziz, Tsung-Hsien Lee, and Amit Prakash.