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

Kris Larsen
Kris Larsen
8,015 Points
Posted by Kris Larsen
Kris Larsen
8,015 Points

if statement

This is the challenge:

Your job is to write an if statement inside the for loop to carry out the desired checks.

If the number is indeed both an odd number and a multiple of 7, append the value to the results array provided.

I dont know what I shall do to find the odd and multiple of 7? I am lost.

logicalOperators.swift 
 var results: [Int] = [7, 21, 35, 49, 63, 77, 91]

for n in 1...100 {
    // Enter your code below
    if ??? 
    // End code 
}

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi Kris,

If you use the mod (modulo, modulus?) function that gives you the remainder of a division function. The operator is a percent sign. So 4 % 2 returns zero as 4 divided by two leaves no remainder. So, 7 % 2 gives you 1 for the same reason.

Testing for "oddness" can be done by checking if number % 2 != 0 or number % 2 == 1.

I hope that helps - and have a look at this post on the same point from yesterday.

Cheers,

Steve.