com_github_leetcode.list_node.rb Maven / Gradle / Ivy

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104 LeetCode algorithm problem solutions

There is a newer version: 1.8

# Definition for singly-linked list.
class ListNode
  attr_accessor :val, :next

  def initialize(x = 0, _next = nil)
    @val = x
    @next = _next
  end

  def to_a
    result = []
    current = self
    while current
      result << current.val
      current = current.next
    end
    result
  end
end