const byte rowPins[5] = {9, 10, 11, 12, 13};
const byte columnPins[4] = {2, 3, 4, 5};
const byte rows = 5, columns = 4;

const byte digitZero[5][4] = {
  {1, 1, 1, 1},
  {1, 0, 0, 1},
  {1, 0, 0, 1},
  {1, 0, 0, 1},
  {1, 1, 1, 1}
};

void setup() {
  Serial.begin(9600);
  for (int i = 0; i < rows; i++) {
    pinMode(rowPins[i], OUTPUT);
    digitalWrite(rowPins[i], LOW);
  }
  for (int i = 0; i < columns; i++) {
    pinMode(columnPins[i], OUTPUT);
    digitalWrite(columnPins[i], HIGH);
  }
}

void loop() {
  for (int j = 0; j < rows; j++) {
    digitalWrite(rowPins[j], HIGH);
    for (int i = 0; i < columns; i++) {
      digitalWrite(columnPins[i], digitZero[j][i] ? LOW : HIGH);
      digitalWrite(columnPins[i], HIGH);
    }
    digitalWrite(rowPins[j], LOW);
  }
}