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If i got two int lists where i want to compare these numbers is it ok

Nabin Agarwala

If i got two int lists where i want to compare these numbers is it ok to use a for loop and a contain to check each number or is this a slow way to check the numbers. If so how would you do. The numbers isn't at the same place in the list if they exist of course.

3 Replies

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Rajanikant Hawaldar5y ago
Accepted answer
if they're not at the same place then you can't iterate and compare, you need to sort them first
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Jignesh Kumar5y ago
Hi Nabin,

You can use in build method for list Intersect and Except methods.

List listA = new List();
List listB = new List();
Var numberExistsInBoth = listA.Intersect(listB).ToList();
var numberExistsInAbutNotInB = listA.Except(listB).ToList();
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Amit Gupta5y ago
var firstNotSecond = list1.Except(list2).ToList();
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