[Leetcode 237, Easy] Delete Node in a Linked List

Problem:

Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.

Supposed the linked list is

1 -> 2 -> 3 -> 4

and you are given the third node
with value

3

, the linked list should become

1
 -> 2 -> 4

after calling your function.
Analysis:

Solutions:

C++:

void deleteNode(ListNode* node) {
        if(node->next == NULL)
            return;
            
        node->val = node->next->val;
        node->next = node->next->next;
    }

Java:

Python: