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

Lewis Mansbridge
Lewis Mansbridge
1,119 Points
Posted by Lewis Mansbridge
Lewis Mansbridge
1,119 Points

Hi there, I'd like some help if its okay :) For and in loops and that stuff, just a quick question please :)

Is it bad I'v been taking this course but still don't know how to do some of the challenges they set?
Please help with this, also does anyone know a age / more videos i can watch to help me with the if statements and mainly the for in looping statements? Thank you for your help!

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

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

    // End code 
}

1 Answer

jcorum
jcorum
71,828 Points

Lewis, you use the modulus (or remainder) operator to check if a number is evenly divisible by another number or not:

    if n % 2 != 0 && n % 7 == 0 {
      results.append(n)
    }

If a number n is even (evenly divisible by 2) the n % 2 is 0. If it's odd then n % 2 is not 0.

Lewis Mansbridge
Lewis Mansbridge
1,119 Points
Lewis Mansbridge
Lewis Mansbridge
1,119 Points

Hi there, thanks for your reply, This has helped, but I'm still a little stuck, do you know any websites that can explain it ? Just this bit throws me abit, thank you!