Vectors.

A vector is a growable array of elements. Like an array, it contains components that can be accessed using an integer index. However, the size of a Vector can grow or shrink as needed to accommodate adding and removing items after the Vector has been created. The class Vector includes methods for examining individual elements, comparing, searching and extracting parts.

 
Vector < int > intVector;

void setup() {
  Serial.begin(9600); 
  pinMode(48, OUTPUT);  // turn ON wiring hardware LED
  digitalWrite(48, HIGH);
  
  for(int i=0; i<255; i++) {  // add 255 elements from 0 to 254
    intVector.addElement(i);
  }
  
  Serial.print("The vector's capacity is: ");
  Serial.println(intVector.capacity(), DEC);  // print the vector's capacity

  if(intVector.contains(15) == true) {  // check if contains number 15
    Serial.println("The vector contains the element 15");
  }
  Serial.print("The vector's first element is: ");
  Serial.println(intVector.firstElement(), DEC);  // print the vector's first element
  Serial.print("The vector's index for element 30 is: ");
  Serial.println(intVector.indexOf(30), DEC);  // print the vector's element at position 30
  if(intVector.isEmpty() == false) {  // check if vector has elements
    Serial.println("The vector has elements");
  } 
  Serial.print("The vector's last element is: ");  
  Serial.println(intVector.lastElement(), DEC);  // print the vector's last element
  Serial.print("The vector's last index of 10 is: ");
  Serial.println(intVector.lastIndexOf(10), DEC);  // print the vector's last index of 10
  Serial.print("The vector's size is: ");
  Serial.println(intVector.size(), DEC);  // print the vector's size

  if(intVector.add(255) == true) {  // add element
    Serial.print("the element was added and now the vector's last element is: ");
    Serial.println(intVector.lastElement(), DEC);  // print the vector's last element
  }

  intVector.addElement(256); // add another element
  Serial.print("now the vector's last element is: ");  
  Serial.println(intVector.lastElement(), DEC);  // print the vector's last element

  intVector.insertElementAt(0, 10);  // insert 0 at index 10

  int t = intVector.elementAt(10);  // get the element at index 10
  Serial.print("t is: ");
  Serial.println(t, DEC);  // print its value

  intVector.remove(10);  // remove element at position 10
  t = intVector.get(10);  // get the element at position 10
  Serial.print("t after remove is: ");
  Serial.println(t, DEC);  // print the element at position 10

  intVector.removeElementAt(10);  // remove element at position 10
  t = intVector.get(10);  // get the element at position 10
  Serial.print("t after removeElementAt is: ");  // print the element at position 10
  Serial.println(t, DEC);

  if(intVector.removeElement(23) ==true) {  // remove element 23 from the Vector
    Serial.print("the element 23 was removed and the element value after remove is: ");
  } 

  intVector.setElementAt(10, 5);  // set element at postion 5 with value 10
  t = intVector.get(5);  // get the element at position 10
  Serial.print("element at index 5 is now: ");
  Serial.println(t, DEC);  // print the element at position 10

  intVector.clear();  // clear all elements in the vector
  Serial.print("The vector's size after clear is: ");
  Serial.println(intVector.size(), DEC);  // print the vector's size 
}


void loop() {

}