- Practice
- Data Structures
- Linked Lists
- Get Node Value

# Get Node Value

# Get Node Value

_{This challenge is part of a tutorial track by MyCodeSchool}

Given a pointer to the head of a linked list and a specific position, determine the data value at that position. Count backwards from the tail node. The tail is at postion 0, its parent is at 1 and so on.

**Example**

refers to

Each of the data values matches its distance from the tail. The value is at the desired position.

**Function Description**

Complete the *getNode* function in the editor below.

*getNode* has the following parameters:

*SinglyLinkedListNode pointer head:*refers to the head of the list*int positionFromTail:*the item to retrieve

**Returns**

*int:*the value at the desired position

**Input Format**

The first line contains an integer , the number of test cases.

Each test case has the following format:

The first line contains an integer , the number of elements in the linked list.

The next lines contains an integer, the data value for an element of the linked list.

The last line contains an integer , the position from the tail to retrieve the value of.

**Constraints**

- , where is the element of the linked list.

**Sample Input**

```
2
1
1
0
3
3
2
1
2
```

**Sample Output**

```
1
3
```

**Explanation**

In the first case, there is one element in linked list with a value of 1. The last (only) element contains 1.

In the second case, the list is . The element with position of 2 from tail contains 3.