int pin[8]={15, 2, 4, 5, 18, 19, 21, 22 };
  int num[10][8]={
    {1,1,1,0,1,1,1,0},//0
    {0,0,1,0,1,0,0,0},//1
    {1,1,0,0,1,1,0,1},//2
    {0,1,1,0,1,1,0,1},//3
    {0,0,1,0,1,0,1,1},//4
    {0,1,1,0,0,1,1,1},//5
    {1,1,1,0,0,1,1,1},//6
    {0,0,1,0,1,1,0,0},//7
    {1,1,1,0,1,1,1,1},//8
    {0,1,1,0,1,1,1,1},//9
    
  };
  void setup() {

  for(int i=0; i<8; i++){
     pinMode(pin[i], OUTPUT);
  };
    //  pinMode(15, OUTPUT);
    //  pinMode(2, OUTPUT);
    //  pinMode(4, OUTPUT);
    //  pinMode(5, OUTPUT);
    //  pinMode(18, OUTPUT);
    //  pinMode(19, OUTPUT);
    //  pinMode(21, OUTPUT);
    //  pinMode(22, OUTPUT);
}

void loop() {
  for(int i=0; i<10; i++){
     for(int j=0; j<8; j++){
     digitalWrite(pin[j], num[i][j]);
    
  } delay(1000);
  
  };
  
  
  
  // //9
  //    digitalWrite(15, LOW);
  //    digitalWrite(2, HIGH);
  //    digitalWrite(4, HIGH);
  //    digitalWrite(5, HIGH);
  //    digitalWrite(18, HIGH);
  //    digitalWrite(19, HIGH);
  //    digitalWrite(21, HIGH);
  //    digitalWrite(22, HIGH);
  //    delay(1000);
  // //8
  //    digitalWrite(15, HIGH);
  //    digitalWrite(2, HIGH);
  //    digitalWrite(4, HIGH);
  //    digitalWrite(5, HIGH);
  //    digitalWrite(18, HIGH);
  //    digitalWrite(19, HIGH);
  //    digitalWrite(21, HIGH);
  //    digitalWrite(22, HIGH);
  //    delay(1000);
  // //7
  //    digitalWrite(15, LOW);
  //    digitalWrite(2, LOW);
  //    digitalWrite(4, HIGH);
  //    digitalWrite(5, LOW);
  //    digitalWrite(18, HIGH);
  //    digitalWrite(19, HIGH);
  //    digitalWrite(21, LOW);
  //    digitalWrite(22, LOW);
  //    delay(1000);
  // //6
  //    digitalWrite(15, HIGH);
  //    digitalWrite(2, HIGH);
  //    digitalWrite(4, HIGH);
  //    digitalWrite(5, HIGH);
  //    digitalWrite(18, LOW);
  //    digitalWrite(19, HIGH);
  //    digitalWrite(21, HIGH);
  //    digitalWrite(22, HIGH);
  //    delay(1000);
  // //5
  //    digitalWrite(15, LOW);
  //    digitalWrite(2, HIGH);
  //    digitalWrite(4, HIGH);
  //    digitalWrite(5, HIGH);
  //    digitalWrite(18, LOW);
  //    digitalWrite(19, HIGH);
  //    digitalWrite(21, HIGH);
  //    digitalWrite(22, HIGH);
  //    delay(1000);
  // //4
  //    digitalWrite(15, LOW);
  //    digitalWrite(2, LOW);
  //    digitalWrite(4, HIGH);
  //    digitalWrite(5, HIGH);
  //    digitalWrite(18, HIGH);
  //    digitalWrite(19, LOW);
  //    digitalWrite(21, HIGH);
  //    digitalWrite(22, HIGH);
  //    delay(1000);
  // //3
  //    digitalWrite(15, LOW);
  //    digitalWrite(2, HIGH);
  //    digitalWrite(4, HIGH);
  //    digitalWrite(5, HIGH);
  //    digitalWrite(18, HIGH);
  //    digitalWrite(19, HIGH);
  //    digitalWrite(21, LOW);
  //    digitalWrite(22, HIGH);
  //    delay(1000);
  // //2
  //    digitalWrite(15, HIGH);
  //    digitalWrite(2, HIGH);
  //    digitalWrite(4, LOW);
  //    digitalWrite(5, HIGH);
  //    digitalWrite(18, HIGH);
  //    digitalWrite(19, HIGH);
  //    digitalWrite(21, LOW);
  //    digitalWrite(22, HIGH);
  //    delay(1000);
  // //1
  //    digitalWrite(15, LOW);
  //    digitalWrite(2, LOW);
  //    digitalWrite(4, HIGH);
  //    digitalWrite(5, LOW);
  //    digitalWrite(18, HIGH);
  //    digitalWrite(19, LOW);
  //    digitalWrite(21, LOW);
  //    digitalWrite(22, LOW);
  //    delay(1000);
  // //0
  //    digitalWrite(15, HIGH);
  //    digitalWrite(2, HIGH);
  //    digitalWrite(4, HIGH);
  //    digitalWrite(5, HIGH);
  //    digitalWrite(18, HIGH);
  //    digitalWrite(19, HIGH);
  //    digitalWrite(21, HIGH);
  //    digitalWrite(22, LOW);
  //    delay(1000);
}