delete_node_in_a_linked_list.js

//Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.
//
//Given linked list -- head = [4,5,1,9], which looks like following:
//
//    4 -> 5 -> 1 -> 9
//Example 1:
//
//Input: head = [4,5,1,9], node = 5
//Output: [4,1,9]
//Explanation: You are given the second node with value 5, the linked list
//             should become 4 -> 1 -> 9 after calling your function.
//Example 2:
//
//Input: head = [4,5,1,9], node = 1
//Output: [4,5,9]
//Explanation: You are given the third node with value 1, the linked list
//             should become 4 -> 5 -> 9 after calling your function.
//Note:
//
//The linked list will have at least two elements.
//All of the nodes' values will be unique.
//The given node will not be the tail and it will always be a valid node of the linked list.
//Do not return anything from your function.

/**
 * Definition for singly-linked list.
 * function ListNode(val) {
 *     this.val = val;
 *     this.next = null;
 * }
 */
/**
 * @param {ListNode} node
 * @return {void} Do not return anything, modify node in-place instead.
 */
var deleteNode = function(node) {
    node.val = node.next.val    
    node.next = node.next.next    
};