4x4x2 Charlieplexed Arduino LED Cube Test

//initialize the port numbers. You can easily change them here if you connected your LEDs in another way than I suggested
int led0 = 0;
int led1 = 1;
int led2 = 2;
int led3 = 3;
int led4 = 4;
int led5 = 5;
int led6 = 6;
int led7 = 7;

//the time we will wait after lighting one LED (in ms)
int time = 500;

void setup(){ //this method will be run once after powering up the arduino
    //put all the pins in input mode so we can use the charlieplexing technique
    //depending on which pins we put on OUTPUT and HIGH/LOW another LED will light up
    pinMode(led0, INPUT);
    pinMode(led1, INPUT);
    pinMode(led2, INPUT);
    pinMode(led3, INPUT);
    pinMode(led4, INPUT);
    pinMode(led5, INPUT);
    pinMode(led6, INPUT);
    pinMode(led7, INPUT);
    off(); //ensure all the LEDs are off
}


void loop(){ //this method will be repeated once the setup is finished
    splash1(); //we basicly keep calling this method
}

void splash1(){ //puts on all leds, then tests all leds one by one
    test();
    a1(); b1(); c1(); d1(); e1(); f1(); g1(); h1(); i1(); j1(); k1(); l1(); m1(); n1(); o1(); p1();
    p2(); o2(); n2(); m2(); l2(); k2(); j2(); i2(); h2(); g2(); f2(); e2(); d2(); c2(); b2(); a2();
    off();
    delay (time);
}

void off(){
    pinMode(led0, INPUT);
    pinMode(led1, INPUT);
    pinMode(led2, INPUT);
    pinMode(led3, INPUT);
    pinMode(led4, INPUT);
    pinMode(led5, INPUT);
    pinMode(led6, INPUT);
    pinMode(led7, INPUT);
}

void a1(){
pinMode(led0, OUTPUT);
digitalWrite(led0, LOW);
pinMode(led4, OUTPUT);
digitalWrite(led4, HIGH);
delay (time);
off();
}

void b1(){
pinMode(led1, OUTPUT);
digitalWrite(led1, LOW);
pinMode(led4, OUTPUT);
digitalWrite(led4, HIGH);
delay (time);
off();
}

void c1(){
pinMode(led2, OUTPUT);
digitalWrite(led2, LOW);
pinMode(led4, OUTPUT);
digitalWrite(led4, HIGH);
delay (time);
off();
}

void d1(){
pinMode(led3, OUTPUT);
digitalWrite(led3, LOW);
pinMode(led4, OUTPUT);
digitalWrite(led4, HIGH);
delay (time);
off();
}

void e1(){
pinMode(led0, OUTPUT);
digitalWrite(led0, LOW);
pinMode(led5, OUTPUT);
digitalWrite(led5, HIGH);
delay (time);
off();
}

void f1(){
pinMode(led1, OUTPUT);
digitalWrite(led1, LOW);
pinMode(led5, OUTPUT);
digitalWrite(led5, HIGH);
delay (time);
off();
}

void g1(){
pinMode(led2, OUTPUT);
digitalWrite(led2, LOW);
pinMode(led5, OUTPUT);
digitalWrite(led5, HIGH);
delay (time);
off();
}

void h1(){
pinMode(led3, OUTPUT);
digitalWrite(led3, LOW);
pinMode(led5, OUTPUT);
digitalWrite(led5, HIGH);
delay (time);
off();
}

void i1(){
pinMode(led0, OUTPUT);
digitalWrite(led0, LOW);
pinMode(led6, OUTPUT);
digitalWrite(led6, HIGH);
delay (time);
off();
}

void j1(){
pinMode(led1, OUTPUT);
digitalWrite(led1, LOW);
pinMode(led6, OUTPUT);
digitalWrite(led6, HIGH);
delay (time);
off();
}

void k1(){
pinMode(led2, OUTPUT);
digitalWrite(led2, LOW);
pinMode(led6, OUTPUT);
digitalWrite(led6, HIGH);
delay (time);
off();
}

void l1(){
pinMode(led3, OUTPUT);
digitalWrite(led3, LOW);
pinMode(led6, OUTPUT);
digitalWrite(led6, HIGH);
delay (time);
off();
}

void m1(){
pinMode(led0, OUTPUT);
digitalWrite(led0, LOW);
pinMode(led7, OUTPUT);
digitalWrite(led7, HIGH);
delay (time);
off();
}

void n1(){
pinMode(led1, OUTPUT);
digitalWrite(led1, LOW);
pinMode(led7, OUTPUT);
digitalWrite(led7, HIGH);
delay (time);
off();
}

void o1(){
pinMode(led2, OUTPUT);
digitalWrite(led2, LOW);
pinMode(led7, OUTPUT);
digitalWrite(led7, HIGH);
delay (time);
off();
}

void p1(){
pinMode(led3, OUTPUT);
digitalWrite(led3, LOW);
pinMode(led7, OUTPUT);
digitalWrite(led7, HIGH);
delay (time);
off();
}

void a2(){
pinMode(led0, OUTPUT);
digitalWrite(led0, HIGH);
pinMode(led4, OUTPUT);
digitalWrite(led4, LOW);
delay (time);
off();
}

void b2(){
pinMode(led1, OUTPUT);
digitalWrite(led1, HIGH);
pinMode(led4, OUTPUT);
digitalWrite(led4, LOW);
delay (time);
off();
}

void c2(){
pinMode(led2, OUTPUT);
digitalWrite(led2, HIGH);
pinMode(led4, OUTPUT);
digitalWrite(led4, LOW);
delay (time);
off();
}

void d2(){
pinMode(led3, OUTPUT);
digitalWrite(led3, HIGH);
pinMode(led4, OUTPUT);
digitalWrite(led4, LOW);
delay (time);
off();
}

void e2(){
pinMode(led0, OUTPUT);
digitalWrite(led0, HIGH);
pinMode(led5, OUTPUT);
digitalWrite(led5, LOW);
delay (time);
off();
}

void f2(){
pinMode(led1, OUTPUT);
digitalWrite(led1, HIGH);
pinMode(led5, OUTPUT);
digitalWrite(led5, LOW);
delay (time);
off();
}

void g2(){
pinMode(led2, OUTPUT);
digitalWrite(led2, HIGH);
pinMode(led5, OUTPUT);
digitalWrite(led5, LOW);
delay (time);
off();
}

void h2(){
pinMode(led3, OUTPUT);
digitalWrite(led3, HIGH);
pinMode(led5, OUTPUT);
digitalWrite(led5, LOW);
delay (time);
off();
}

void i2(){
pinMode(led0, OUTPUT);
digitalWrite(led0, HIGH);
pinMode(led6, OUTPUT);
digitalWrite(led6, LOW);
delay (time);
off();
}

void j2(){
pinMode(led1, OUTPUT);
digitalWrite(led1, HIGH);
pinMode(led6, OUTPUT);
digitalWrite(led6, LOW);
delay (time);
off();
}

void k2(){
pinMode(led2, OUTPUT);
digitalWrite(led2, HIGH);
pinMode(led6, OUTPUT);
digitalWrite(led6, LOW);
delay (time);
off();
}

void l2(){
pinMode(led3, OUTPUT);
digitalWrite(led3, HIGH);
pinMode(led6, OUTPUT);
digitalWrite(led6, LOW);
delay (time);
off();
}

void m2(){
pinMode(led0, OUTPUT);
digitalWrite(led0, HIGH);
pinMode(led7, OUTPUT);
digitalWrite(led7, LOW);
delay (time);
off();
}

void n2(){
pinMode(led1, OUTPUT);
digitalWrite(led1, HIGH);
pinMode(led7, OUTPUT);
digitalWrite(led7, LOW);
delay (time);
off();
}

void o2(){
pinMode(led2, OUTPUT);
digitalWrite(led2, HIGH);
pinMode(led7, OUTPUT);
digitalWrite(led7, LOW);
delay (time);
off();
}

void p2(){
pinMode(led3, OUTPUT);
digitalWrite(led3, HIGH);
pinMode(led7, OUTPUT);
digitalWrite(led7, LOW);
delay (time);
off();
}


void test(){
pinMode(led0, OUTPUT);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
digitalWrite(led0, LOW);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);

digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, HIGH);
delay (1000);
digitalWrite(led0, HIGH);
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);

digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
delay (1000);
off();
}