queue

Course Schedule

Determine if all courses can be completed by analyzing prerequisite dependencies using indegree tracking and topological…

Implement Stack using Queues

This problem tests your ability to simulate a LIFO stack using two queues while preserving all standard stack operations…

Implement Queue using Stacks

Implement a queue using two stacks, focusing on stack-based state management to achieve FIFO behavior in a queue.

Sliding Window Maximum

Solve the "Sliding Window Maximum" problem using efficient techniques like the sliding window, deque, and priority queue…

Flatten Nested List Iterator

Implement an iterator to flatten a nested list of integers, accounting for potential nesting levels.

First Unique Character in a String

Find the index of the first non-repeating character in a string using efficient queue-driven state processing.

Design Circular Queue

Design a circular queue that allows efficient FIFO operations using linked-list pointer manipulation to optimize space u…

Design Circular Deque

Design and implement a circular deque using linked-list pointer manipulation, ensuring efficient insertion and deletion …

Dota2 Senate

The Dota2 Senate problem involves simulating voting rounds between Radiant and Dire senators until one party wins, using…

Shortest Subarray with Sum at Least K

Find the shortest subarray with a sum of at least k using binary search and sliding window techniques.

Maximum Sum Circular Subarray

Find the maximum sum of a circular subarray using state transition dynamic programming, optimizing for wraparound cases …

Number of Recent Calls

The "Number of Recent Calls" problem involves designing a class to efficiently track recent requests within a time windo…

Stamping The Sequence

Solve Stamping The Sequence with stack-based state management to convert string s to target using stamp efficiently.

Reveal Cards In Increasing Order

Determine the initial deck order to reveal cards in strictly increasing order using queue-driven simulation logic.

Minimum Number of K Consecutive Bit Flips

Determine the minimum number of k-length consecutive bit flips needed to convert all zeros to ones in a binary array eff…

Constrained Subsequence Sum

Solve the Constrained Subsequence Sum problem using dynamic programming, sliding window, and priority queues to maximize…

Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit

Find the longest subarray with elements whose absolute difference is within a specified limit using a sliding window app…

Max Value of Equation

Max Value of Equation asks to find the maximum value of a specific equation on a set of 2D points using sliding window t…

Design Front Middle Back Queue

Implement a queue that efficiently handles push and pop operations at the front, middle, and back using pointer manipula…

Delivering Boxes from Storage to Ports

Optimize the minimum number of trips to deliver boxes to ports under strict ship constraints using dynamic programming t…

Jump Game VI

Jump Game VI challenges you to maximize your score while jumping through an array using state transition dynamic program…

Number of Students Unable to Eat Lunch

Simulate a queue of students with sandwich preferences and determine how many can't eat based on available sandwiches.

Find the Winner of the Circular Game

Find the winner of a circular game by simulating the elimination process with a queue-driven approach.

Finding MK Average

Find the MKAverage of a stream of integers using a queue-driven approach with efficient state management.