g1101_1200.s1171_remove_zero_sum_consecutive_nodes_from_linked_list

Class Solution

java.lang.Object

g1101_1200.s1171_remove_zero_sum_consecutive_nodes_from_linked_list.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 Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
ListNode	removeZeroSumSublists(ListNode head)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

removeZeroSumSublists

public ListNode removeZeroSumSublists(ListNode head)