int DisplayPins[] = {15,2,0,4,16,17,5};
int ButtonPin = 18;
int cnt = 0;

int _7SegmentSetup[10][7] = 
{
  {HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,LOW},
  {LOW,HIGH,HIGH,LOW,LOW,LOW,LOW},
  {HIGH,HIGH,LOW,HIGH,HIGH,LOW,HIGH},
  {HIGH,HIGH,HIGH,HIGH,LOW,LOW,HIGH},
  {LOW,HIGH,HIGH,LOW,LOW,HIGH,HIGH},
  {HIGH,LOW,HIGH,HIGH,LOW,HIGH,HIGH},
  {HIGH,LOW,HIGH,HIGH,HIGH,HIGH,HIGH},
  {HIGH,HIGH,HIGH,LOW,LOW,LOW,LOW},
  {HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH},
  {HIGH,HIGH,HIGH,HIGH,LOW,HIGH,HIGH}
};

void setup() 
{
  for(int i = 0; i < 7; i++)
  {
    pinMode(DisplayPins[i], OUTPUT);
  }
  pinMode(ButtonPin, INPUT_PULLUP);
}

void loop() 
{
  if(digitalRead(ButtonPin) == LOW)
  {
    if(cnt > 8)
    {
      cnt = 0;
    }
    else
    {
      cnt++;
    }

    for(int i = 0; i < 7; i++)
    {
      digitalWrite(DisplayPins[i], _7SegmentSetup[cnt][i]);
    }
    delay(250);
  }
  delay(50);
}