Merge multiple lists with variable length “popping” elements from each

Question

I\'d like to sort multiple lists (variable number of them) into single list, but keeping the specific order. For example:

List A: { 1,2,3,4,5 }
List B: { 6,7         


        

Answer 1

For more flexible use

 public static string MergeArrays(params IList[] items)
    {

        var result = new List();
        for (var i = 0; i < items.Max(x => x.Count); i++)
            result.AddRange(from rowList in items where rowList.Count > i select rowList[i]);

        return string.Join(",", result);
    }

.

        var a = new List() { 1, 2, 3, 4, 5 };
        var b = new List() { 6, 7, 8 };
        var c = new List() { 9, 10, 11, 12, 0, 2, 1 };

        var r = MergeArrays(a, b, c);