Problem: Implement a Stack using Queues
Explore how to implement a stack using only two queues by manipulating element order during push operations. Understand methods to push, pop, access the top element, and check if the stack is empty, while analyzing their time and space complexities in Java.
We'll cover the following...
Statement
Implement a last in, first out (LIFO) stack using only two queues. The implemented stack should support all the functions of a normal stack (push, top, pop, and empty).
Implement the MyStack class:
void push(int x): Pushes elementxto the top of the stack.int pop(): Removes the element on the top of the stack and returns it.int top(): Returns the element on the top of the stack.boolean empty(): Returnstrueif the stack is empty,falseotherwise.
Note: You must use only standard queue operations, which means only push to back, peek/pop from front, size, and is empty operations are valid. Depending on your language, the queue may not be supported natively. You may use a deque or list as long as you use only standard queue operations.
Constraints:
...