queue

Implement Queue using Stacks Cover Image
Implement Queue using Stacks

Write a program to Implement a queue using the stack. The implemented queue should support standard operations like enqueue, dequeue, and front. This is an excellent problem to learn problem-solving and visualize the use case of stack and queue operations.

Level Order Traversal (BFS Traversal) of a Binary Tree  Cover Image
Level Order Traversal (BFS Traversal) of a Binary Tree 

Level order traversal accesses nodes in level by level order. This is also called breadth-first search traversal or BFS traversal. Here we start from the root node and process it, then process all the nodes at the first level, then process all the nodes at the second level, and so on. In other words, we explore all nodes at the current level before moving on to the nodes at the next level.

Implement Stack using Queues Cover Image
Implement Stack using Queues

Write a program to implement a stack using the queues. The implemented stack should support standard operations like push(x), pop(), and top(). This is an excellent problem to learn problem-solving and visualize the use case of stack and queue operations.

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