Implement the following operations of a stack using queues. # push(x) -- Push element x onto stack. # pop() -- Removes the element on top of the stack. # top() -- Get the top element. # empty() -- ...

Two children in Nova Scotia are missing. Why wasn't an Amber Alert sent out? The search for two children missing in Pictou County entered a fourth day Monday. Halifax Water is seeking approval of its ...

Secretary Rubio’s new role as national security adviser may be unsustainable, according to foreign policy experts.

// A structure to represent an element of the queue.