g0101_0200.s0143_reorder_list.Solution

public class Solution extends Object

143 - Reorder List.

Medium

You are given the head of a singly linked-list. The list can be represented as:

L₀ → L₁ → \u2026 → L_{n - 1} → L_n

Reorder the list to be on the following form:

L₀ → L_n → L₁ → L_{n - 1} → L₂ → L_{n - 2} → \u2026

You may not modify the values in the list’s nodes. Only nodes themselves may be changed.

Example 1:

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

Output: [1,4,2,3]

Example 2:

Input: head = [1,2,3,4,5]

Output: [1,5,2,4,3]

Constraints:

Class Solution

Constructor Summary