new-link這段代碼的含義是什麼？看不懂

link這段代碼的含義是什麼？看不懂

var query = data.Select((x, r) =>x.Select((v, c) => new { r, c, v }));
var result = query.GroupBy(x => x.c).Select(x => x.Select(y => y.v).OrderBy(x => x.r).ToArray()).ToArray();

最佳回答：

我的代碼？
var query = data.Select((x, r) =>x.Select((v, c) => new { r, c, v }));
寫錯了，是
var query = data.SelectMany((x, r) =>x.Select((v, c) => new { r, c, v }));