Ejemplo n.º 1
0
        static void Main(string[] args)
        {
            Stack<string> books = new Stack<string>();

            books.Push("Programming WPF");
            books.Push("The Philosophy Book");
            books.Push("Heat and Thermodynamics");
            books.Push("Harry Potter and the Chamber of Secrets");

            Console.WriteLine("ALL BOOKS:");
            foreach (string title in books)
            {
                Console.WriteLine(title);
            }

            string topItem = books.Pop();
            string topItem = books.Peek();  // Allows you to peek at the top item and not remove it
            Console.WriteLine("\r\nTOP ITEM IS: " + topItem);

            Console.WriteLine("\r\nALL BOOKS:");
            foreach (string title in books)
            {
                Console.WriteLine(title);
            }
        }
Ejemplo n.º 2
0
        static void Main(string[] args)
        {
            var parameters = Console.ReadLine().Split().Select(int.Parse).ToArray();
            var numberOfPushes = parameters[0];
            var numberOfPops = parameters[1];
            var numberToFind = parameters[2];

            var inputNumbers = Console.ReadLine().Split().Select(int.Parse).ToArray();

            var numberStack = new Stack<int>();

            for (int i = 0; i < numberOfPushes; i++)
            {
                numberStack.Push(inputNumbers[i]);
            }

            for (int i = 0; i < numberOfPops; i++)
            {
                numberStack.Pop();
            }

            if (numberStack.Contains(numberToFind))
            {
                Console.WriteLine("true");
            }
            else
            {
                Console.WriteLine(numberStack.Count > 0 ? numberStack.Min() : 0);
            }
        }
Ejemplo n.º 3
0
        static void Main(string[] args)
        {
            Customer c1 = new Customer()
            {
                Id = 101,
                Name = "Oscar",
                Gender = "Male"
            };
            Customer c2 = new Customer()
            {
                Id = 102,
                Name = "Alejandara",
                Gender = "Female"
            };
            Customer c3 = new Customer()
            {
                Id = 103,
                Name = "Juan",
                Gender = "Male"
            };
            Customer c4 = new Customer()
            {
                Id = 104,
                Name = "Johanna",
                Gender = "Female"
            };
            Customer c5 = new Customer()
            {
                Id = 105,
                Name = "Ricardo",
                Gender = "Male"
            };

            // LIFO -> Last in First Out
            Stack<Customer> stackCustomers = new Stack<Customer>();
            stackCustomers.Push(c1);
            stackCustomers.Push(c2);
            stackCustomers.Push(c3);
            stackCustomers.Push(c4);
            stackCustomers.Push(c5);

            Customer tmpC1 = stackCustomers.Pop();
            Console.WriteLine(tmpC1.Id + " - " + tmpC1.Name + " was removed!");
            Console.WriteLine("Customers on the stack {0}", stackCustomers.Count);
            Console.ReadKey();
        }
Ejemplo n.º 4
0
        static void Main(string[] args)
        {
            Stack<int> numbers = new Stack<int>();

            Console.ReadLine()
                .Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries)
                .Select(int.Parse)
                .ToList()
                .ForEach(n => numbers.Push(n));

            while (numbers.Count > 0)
            {
                Console.Write($"{numbers.Pop()} ");
            }

            Console.WriteLine();
        }
Ejemplo n.º 5
0
        static void Main(string[] args)
        {
            var numberOfQueries = int.Parse(Console.ReadLine());

            var stack = new Stack<int>();
            var maxStack = new Stack<int>();
            maxStack.Push(int.MinValue);

            for (int i = 0; i < numberOfQueries; i++)
            {
                var parameters = Console.ReadLine().Split().Select(int.Parse).ToArray();
                var operation = parameters[0];

                switch (operation)
                {
                    case 1:
                        var number = parameters[1];
                        stack.Push(number);
                        if (stack.Peek() > maxStack.Peek())
                        {
                            maxStack.Push(stack.Peek());
                        }
                        break;
                    case 2:
                        var num = stack.Pop();
                        if (num == maxStack.Peek())
                        {
                            maxStack.Pop();
                        }
                        break;
                    case 3:
                        Console.WriteLine(maxStack.Peek());
                        break;
                    default:
                        break;
                }
            }
        }