Method dequeue

GeeksForGeeks/QueueUsingStacks/solution.cpp:23–38

deQueue operation just pops from stack1

    
    // deQueue operation just pops from stack1
    int dequeue()
    {
        if(s1.empty())
            return 0;
        else
        {
            while(!s1.empty())
            {
                s2.push(s1.top());
                s1.pop();
            }
        }
        int x = s2.top();
        s2.pop();
        return x;
    }
};

int main()