Given the head of a linked list and an integer val, remove all nodes with that value.
Example 1:
Input: head = [1, 2, 6, 3, 4, 5, 6], val = 6
Output: [1, 2, 3, 4, 5]
Example 2:
Input: head = [7, 7, 7, 7], val = 7
Output: []
Given the head of a linked list and an integer val, remove all nodes with that value.
Example 1:
Input: head = [1, 2, 6, 3, 4, 5, 6], val = 6
Output: [1, 2, 3, 4, 5]
Example 2:
Input: head = [7, 7, 7, 7], val = 7
Output: []