public static TargetNumbers Get2Numbers(List <int> numbers, int target)
{
var targetNumbers = new TargetNumbers();
numbers.ForEach(x =>
{
var question = target - x;
if (numbers.Contains(question))
{
targetNumbers.ItemA = x;
targetNumbers.ItemB = question;
}
;
});
return(targetNumbers);
}
public static TargetNumbers Get3Numbers(List <int> numbers, int target)
{
var targetNumbers = new TargetNumbers();
foreach (var item in numbers)
{
var newTarget = target - item;
var newNumbers = new List <int>(numbers);
newNumbers.Remove(item);
var twoTargetNumbers = Get2Numbers(newNumbers, newTarget);
if (twoTargetNumbers.ItemA == 0 && twoTargetNumbers.ItemB == 0)
{
continue;
}
targetNumbers.ItemA = twoTargetNumbers.ItemA;
targetNumbers.ItemB = twoTargetNumbers.ItemB;
targetNumbers.ItemC = item;
break;
}
return(targetNumbers);
}