bubox2 https://blog.hatena.ne.jp/bubox2/ そのへんのちらしのうら https://bubox2.hateblo.jp/ C# 再帰クエリで根付き木を解くコード。 using System.Collections.Generic; using System.Linq; namespace RootedTree { class Program { static void Main(string[] args) { // NodeId,ParentNodeId string[,] src = new string[9,2]{ {"A101", ""}, {"A201", "A101"}, {"A202", "A101"}, {"A301", "A201"}, {"A302", "A201"}, {"A303", "A201… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbubox2.hateblo.jp%2Fentry%2F2021%2F03%2F12%2F170000" title="再帰クエリで根付き木 - そのへんのちらしのうら" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2021-03-12 17:00:00 rich https://bubox2.hateblo.jp/entry/2021/03/12/170000 1.0 100%