Queue Practice Problems

Basic Queue Problems:

• Implement Queue using Stacks
• Stack using two Queues
• Queue Reversal
• Flatten Nested List Iterator

Circular Queue Problems:

• Design Circular Queue
• Design Circular Deque
• Maximum Sum Circular Subarray

Priority Queue Problems:

• K Closest Points to Origin
• Top K Frequent Elements
• Path with Maximum Probability
• Merge k Sorted Lists
• Find Median from Data Stream

Deque (Double-Ended Queue) Problems:

• Deque Implementations
• Palindrome Check Using Deque
• Shortest Subarray with Sum at Least K
• Design Front Middle Back Queue
• First negative in every window of size k
• Sliding Window Maximum

Easy

• Stack using two queues
• Queue using stack
• Reverse First K elements of Queue
• Generate Binary Numbers
• Minimum Cost of ropes

Medium

• IPL 2021 - Match Day 2
• First negative in every window of size k
• Print Binary Tree levels in sorted order
• Restricted Pacman
• Count the Reversals

Hard

• LRU Cache
• Steps by Knight
• Complete Binary Tree
• Card Rotation
• Police and Thieves