c# - 如何多个List递归？

Question

假设我有n个list<T>的集合
比如 List<shool>、List<Det>、List<Student>.....
for循环做法
foreacher(var item in List<shool>)
{

foreacher(var item1 in List<Det>)
{
    foreacher(var item2 in List<Student>)
    {
        ......
    }
}

}

最终输出为字典 存储的是第一个为
拿这三个举例
shool_0 det_0 student_0
第二个为
shool 0 det 0 student 1

目前我的想法是递归 但是这边递归不能直接递归 需要回溯这块如何写

想返回字典类型

Answer 1

var arr1 = new[] { 1, 2, 3 };
var arr2 = new[] { 4, 5 };
var arr3 = new[] { 6, 7, 8 };

var list = from t1 in arr1
           from t2 in arr2
           from t3 in arr3
           select new int[] { t1, t2, t3 };

foreach (var item in list)
{
    Console.WriteLine(string.Join(",", item));
}

https://stackoverflow.com/questions/4423838/cartesian-product-n-x-m-dynamic-array