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class Solution {
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  public ListNode removeElements(ListNode head, int val) {
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    if (head == null) {
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      return head;
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    }
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    ListNode result = head;
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    while (head.next != null) {
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      if (head.next.val == val) {
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        head.next = head.next.next;
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      } else {
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        head = head.next;
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      }
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    }
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    if (result.val == val) {
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      result = result.next;
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    }
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    return result;
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  }
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}