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: ...

Learn the most efficient way to use one array to implement both a stack and a queue, two common data structures for algorithms. See a code example in Java.

Learn what stacks and queues are, how they work, and how they can be used to solve algorithmic problems. Discover how to combine stacks and queues for more complex algorithms. Skip to main content ...

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: ...