Question

I am novice in writing lambda expressions and I have the next problem:
I have

List<int> lifeField;
I want to find index of those members, that correspond to next condition:
(((number % (10 * currentMove)) == 1) || ((number % (10 * currentMove)) == 2))
where number is member of List and currentMove is integer - 0,1,2

For example:

if it is first move
currentMove = 0
I search number 1 or 2 
if it is second move 
I search numbers 11,21

……
I want to find how to write this here with lambda…. or in other function

int indexOfLife = Array.FindIndex(lifeField, ?????????);

Answer 1

var indexes = lifeField.Select((x,i) => new {Index = i, Element = x})
    .Where(x => 
        ((x.Element % (10 * currentMove)) == 1) || 
        ((x.Element % (10 * currentMove)) == 2))
    .Select(x => x.Index)
    .ToList();