Package g1101_1200.s1171_remove_zero_sum_consecutive_nodes_from_linked_list

Class Solution

  • public class Solution
extends Object
    1171 - Remove Zero Sum Consecutive Nodes from Linked List.

    Medium

    Given the head of a linked list, we repeatedly delete consecutive sequences of nodes that sum to 0 until there are no such sequences.

    After doing so, return the head of the final linked list. You may return any such answer.

    (Note that in the examples below, all sequences are serializations of ListNode objects.)

    Example 1:

    Input: head = [1,2,-3,3,1]

    Output: [3,1] Note: The answer [1,2,1] would also be accepted.

    Example 2:

    Input: head = [1,2,3,-3,4]

    Output: [1,2,4]

    Example 3:

    Input: head = [1,2,3,-3,-2]

    Output: [1]

    Constraints:

    • The given linked list will contain between 1 and 1000 nodes.
    • Each node in the linked list has -1000 <= node.val <= 1000.

    • Constructor Detail

      • Solution

        public Solution()

    • Method Detail

      • removeZeroSumSublists

        public ListNode removeZeroSumSublists​(ListNode head)