//crear vector con Split
            int N = Convert.ToInt32(Console.ReadLine());
            string [] cadena = Console.ReadLine().Split(' ');
            int [] vector = new int[cadena.Length];
            
        //llena el vector 
            for (int i=0; i<vector.Length; i++) {
            	vector[i] = Convert.ToInt32(cadena[i]);
            }
            
        //imprimir el vector
            for (int i= 0; i < vector.Length; i++) {
                Console.WriteLine(vector[i]); 
            }
            
        //imprimir Inverso
            for (int i= vector.Length-1; i > 0; i--) {
                Console.WriteLine(vector[i]); 
            }
            
        //Ordenar vector Ascendente
            int aux;
            for (int i= 0; i < vector.Length; i++) {
                vector[i] = Convert.ToInt32(cadena[i]); 
            }
            for (int k = 0; k < vector.Length;k++) {
                for (int i=0; i < vector.Length; i++) {
                    if (vector[i] > vector[i+1]) {
                        aux = vector[i];
                        vector[i] = vector[i+1];
                        vector[i+1] = aux;
                    }
                }    
            }
            
        //Ordenar vector Descendente
            int aux;        
            for (int k=0; k < vector.Length;k++) {
                for (int i=0; i < vector.Length; i++) {
                    if (vector[i] < vector[i+1]) {
                        aux = vector[i];
                        vector[i] = vector[i+1];
                        vector[i+1] = aux;
                    }
                }    
            }
            
        //tabla de multiplicar de un numero (Dato)
            int dato = 2;
            int []vector = new int [10];
            Console.WriteLine("Tabla de mult del :" + dato);
            for (int i=0; i < 10; i++) {
                vector[i] = (i+1) * dato;
                Console.WriteLine(vector[i]+ " "); 
            }
            
        //NUMERO MENOR Y MAYOR CON NUMERO DE POSICION
            int mayor=vec[0], pos1=0;
            int menor=vec[0], pos2=0;
            for (int i=1; i < vector.Length; i++) {
                //Mayor
                if (vector[i] > mayor) {
                    mayor = vector[i];
                    pos1 = i;
                }
                //Menor
                if (vector[i] < menor) {
                    menor = vector[i];
                    pos2 = i;
                }
            }
            
    //CICLOS
            
        //for
            int N = Convert.ToInt32(Console.ReadLine());
            // N controla la cantidad de veces de repeticion
            for(int i = 0 ;i < N; i ++){
                //aqui va lo que se repite
            }
            
        //while
            int opc;
            opc = Convert.ToInt32(Console.ReadLine());
            while(opc != <> var && ||){
                // aqui codigo que se repite
                
               opc = Convert.ToInt32(Console.ReadLine()); 
            }
            
        //do while y Switch
            do{
                opc = Convert.ToInt32(Console.ReadLine());
                //.ToUpper(); //Mayusculas
                //.ToLower(); // Minusculas
                // aqui codigo que se repite hasta digitar X
                switch(opc){
                    case 1: 
                        break;
                    case 2:
                        break;
                    default:
                        break;
                }//switch
                
            }while(opc != X "X");//sale con la X