Easy
Quiz
#203 Remove Linked List Elements
APPROACH
Given the head of a linked list and an integer val, remove every node whose value equals val and return the resulting list's head.
Example 1:
Input: head = [1,2,6,3,4,5,6], val = 6
Output: [1,2,3,4,5]
Example 2:
Input: head = [], val = 1
Output: []
Example 3:
Input: head = [7,7,7,7], val = 7
Output: []
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What is the optimal approach for this problem?