Insert a node at the head of a linked list Hackkerank
static SinglyLinkedListNode insertNodeAtHead(SinglyLinkedListNode llist, int data) {
SinglyLinkedListNode temp=llist;
SinglyLinkedListNode newNode =new SinglyLinkedListNode(data);
llist=newNode;
newNode.next=temp;
return llist;
}
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