Check if List values are consecutive

Question

List dansConList = new List();
dansConList[0] = 1;
dansConList[1] = 2;
dansConList[2] = 3;

List dansRandomList = new List

        

Answer 1

Caveat: returns true if empty.

var list = new int[] {-1,0,1,2,3};
var isConsecutive = list.Select((n,index) => n == index+list.ElementAt(0)).All (n => n);