HTMLify

/**
 * Definition for singly-linked list.
 * type ListNode struct {
 *     Val int
 *     Next *ListNode
 * }
 */
func removeElements(head *ListNode, val int) *ListNode {
	var prev *ListNode
	th := head
	for th != nil {
		prev = th
		th = th.Next
		for th != nil && th.Val == val {
			prev.Next = th.Next
			th = th.Next
		}
	}
	for head != nil && head.Val == val {
		head = head.Next
	}
	return head
}