Leetcode: Serialize And Deserialize Binary Tree - Qiita

require 'minitest/autorun' require 'pry' class SerializeAndDeserializeBinaryTree < Minitest::Test def test_run expected = [1, 2, 3, nil, nil, 4, 5] tree = TreeNode.new(1) tree.left = TreeNode.new(2) tree.right = TreeNode.new(3) tree.right.left = TreeNode.new(4) tree.right.right = TreeNode.new(5) serialized_tree = "12XX34XX5XX" assert_equal(serialized_tree, serialize(tree)) deserialize(serialized_t