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

Laksakan Krishnapillai
Laksakan Krishnapillai
6,390 Points
Posted by Laksakan Krishnapillai
Laksakan Krishnapillai
6,390 Points

Task help... Explanation, please ?

I have looked at this task on the community but I still can't work out how this is the answer for that task. Can somebody explain how it works to me so I can actually understand it?

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

for n in 1...100 {
    // Enter your code below
    if n % 2 != 0 && n % 7 == 0 {
      results.append(n)
    }
    // End code 
}
Gabriel Morris
seal-mask
.a{fill-rule:evenodd;}techdegree
Gabriel Morris
iOS Development Techdegree Student 789 Points
Gabriel Morris
.a{fill-rule:evenodd;}techdegree
Gabriel Morris
iOS Development Techdegree Student 789 Points

Breaking it down line by line:

var results: [Int] = []

Create empty array of integers called results

for n in 1...100 {

For every number n between 1 and 100 inclusive

    if n % 2 != 0 && n % 7 == 0 {

If n divided by two has a remainder that does not equal zero AND n divided by 7 has a remainder that does equal 0

      results.append(n)

Append to results array.

So, since you want to check for odd numbers and odd numbers divided by 2 don't have a remainder of 0 you do n % 2 != 0, and since you want numbers that are also multiples of 7 and a multiple of 7 divided by 7 does not have a remainder you complete that line with && n % 7 == 0.

Hope that helps!