Beginner Swift 3: How to find pairs in array that add up to given number

Question

Need to loop through an array and say whether there are any pairs of numbers that sum to 8

e.g. [1,2,4,4] = yes

Can get it working with lots of nested if stateme

Answer 1

You can use nested for loops with indexes:

for (firstIndex, firstElement) in numbersSet.enumerated() {
    for (secondIndex, secondElement) in numbersSet.enumerated() {
        if firstIndex != secondIndex && firstElement + secondElement == 8 {
            return true
        }
    }
}