### Problem Statement :

```Given a pointer to the head of a linked list, insert a new node before the head. The next value in the new node should point to head and the data value should be replaced with a given value. Return a reference to the new head of the list. The head pointer given may be null meaning that the initial list is empty.

Function Description:

Complete the function insertNodeAtHead in the editor below.

2. data: the value to insert in the data field of the new node

Input Format:

The first line contains an integer n, the number of elements to be inserted at the head of the list.
The next n lines contain an integer each, the elements to be inserted, one per function call.

Constraints:
1.   1<=n<=1000
2.   1<=list[i]<=1000```

### Solution :

```                            ```Solution in C :

In C:

//The following function is all you need to complete the
// challenge in hackerrank platform

new->data = data;

if(llist == NULL){
llist = new;
new->next = NULL;
return llist;
}

new-> next = llist;
llist = new;
return llist;

}

In C++:

//The following function is all you need to complete the challenge
//in hackerrank platform.

{
Node *n = new Node();
n->data = data;
}

In Java:

//the following method is all you need to complete the challenge in
//hackerrank platform.

return node;
} else {
}
}

In Python 3:

# the following method is all that is needed to  complete the
# challenge in hackerrank platform

return newNode```
```

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