 # How Do You Find A Node In A Linked List?

## How do you find the loop in a linked list?

Approach: This is the fastest method and has been described below:Traverse linked list using two pointers.Move one pointer(slow_p) by one and another pointer(fast_p) by two.If these pointers meet at the same node then there is a loop.

If pointers do not meet then linked list doesn’t have a loop..

## How do you find the Nth node in a linked list?

Method 2 (Use two pointers) Initialize both reference and main pointers to head. First, move the reference pointer to n nodes from head. Now move both pointers one by one until the reference pointer reaches the end. Now the main pointer will point to nth node from the end.

## How do you create a node in a linked list?

Java program to create a singly linked list of n nodes and count the number of nodesCreate a class Node which has two attributes: data and next. Next is a pointer to the next node in the list.Create another class which has two attributes: head and tail.addNode() will add a new node to the list: Create a new node.

## How do you find an element in a linked list?

Searching in singly linked listStep 1: SET PTR = HEAD.Step 2: Set I = 0.STEP 3: IF PTR = NULL.STEP 4: REPEAT STEP 5 TO 7 UNTIL PTR != NULL.STEP 5: if ptr → data = item.STEP 6: I = I + 1.STEP 7: PTR = PTR → NEXT.STEP 8: EXIT.

## How do you find the first node in a linked list?

Write a function findFirstLoopNode() that checks whether a given Linked List contains a loop. If the loop is present then it returns point to the first node of the loop. Else it returns NULL.