# Find nth element from end of linked list

This is one of popular interview question.

## Java Linked List Interview Programs:

#### Assumption:

We do not know size of linkedlist otherwise we can directly iterate and find (length-n)th node

#### Algorithm for this problem would be :

• Use two pointer firstPtr and secondPtr and initialize both to head of linkedlist
• Move firstPtr by n-1 nodes.
• Increment firstPtr and secondPtr until firstPtr.next not equal to null.
• SecondPtr will be at nth from end node.

Java program for this will be :

Logically our linkedlist look like following:

Color node represent 3rd node from last.
Run above program, you will get following output:

Please go through java interview programs for more such programs.

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