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iOS Swift 2.0 Collections and Control Flow Control Flow With Conditional Statements Working with Logical Operators

Simon Di Giovanni
Simon Di Giovanni
8,429 Points
Posted by Simon Di Giovanni
Simon Di Giovanni
8,429 Points

Logical operators code challenge.... So confused??

So I simply do not understand at all the code challenge for logical operators

What function is supposed to go into the 'if' statement?

How do I tell the 'if' statement to check for multiples of 7?? How do you tell the 'if' statement to check it for odd numbers?

logicalOperators.swift 
var results: [Int] = []

for n in 1...100 {
    // Enter your code below

    // End code 
}

1 Answer

Grant Jason
Grant Jason
10,713 Points

Hey Simon,

The best way to check for multiples, odds or events is the use the modulo (or the "%" operator) which checks for a remainder after the division. Therefore, in order to check whether a number is odd AND even, you need to perform the modulo on n both in the case of 2 and 7. Your loop should look like...

var results: [Int] = []

for n in 1...100 {
    if n % 2 != 0 && n % 7 == 0 {
        results.append(n)
    }
}
Simon Di Giovanni
Simon Di Giovanni
8,429 Points
Simon Di Giovanni
Simon Di Giovanni
8,429 Points

Thanks mate.. Makes sense now! I just need to be a little more patient I think!