# Print Statisticsby Isai Damier, Android Engineer @ Google

```/***************************************************************************
* Author: Isai Damier
* Project: geekviewpoint
* Package: datastructure
*
* Description: A LinkedList is a data structure that allows access
*   to a collection of data using pointers/references. While an
*   array can also be defined as above, LinkedLists and arrays differ
*   in how they are stored in memory and in the operations they
*   allow. Unlike an array that must be stored in a block of memory,
*   the nodes of a LinkedList can be stored anywhere because each
*   node has a reference to the node that succeeds it. Because the
*   nodes are stored so loosely, inserting nodes into a LinkedList
*   is easy; whereas in an array, all the succeeding elements must
*   be shifted. Of course, insertion also means changing the size of
*   the array, which means creating the entire array anew.
*
*   Perhaps the greatest beauty of LinkedList is that it allows
*   accessing an entire sequence of nodes using only one variable:
*   a reference to the first node in the sequence.
*
*   Countless operations can be performed on LinkedLists. Following
*   are a few, ranging from the common to the very interesting.
**************************************************************************/

Node tail = null;

/*****************************************************************
* Time Complexity of Solution:
*   O(n).
*
*   LinkedList: min, max, sum, size, and avg.
*
* Technical Details:
*
*****************************************************************/
public int[] printStats() {//min, max, avg, sum, size
return null;
}
int min, max, avg, sum, size;
min = max = avg = sum = size = 0;
for (Node t = head; null != t; t = t.next) {
} else {
if (min > t.data) {
min = t.data;
}
if (max < t.data) {
max = t.data;
}
}
sum += t.data;
size++;
}//for
return new int[]{min, max, sum, size, sum / size};
}
}```
```public class SinglyLinkedListTest {

/**
* Test of printStats method, of class SinglyLinkedList.
*/
@Test
public void testPrintStats() {
System.out.println("printStats");
int[] input = {9, 4, 5, 2, 1, 12, 6, 7, 4, 8, 3, 0, 16, 19, 11};