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

Justin Reed
PLUS
Justin Reed
Courses Plus Student 2,164 Points
Posted by Justin Reed
Justin Reed
Courses Plus Student 2,164 Points

Having trouble with 'if' statement for control flow

I am trying to append all of the numbers from 1-100 that are both odd and a multiple of. This code is working fine in xcode, hoping somebody can point out what Im missing,

thanks Justin

var results: [Int] = []

for n in 1...100 {

if n % 2 != 0 && n % 7 == 0 {
  results += [n]
}

}

2 Answers

andren
andren
28,558 Points
andren
andren
28,558 Points

Your code is technically fine, this is just a case of the task checker being a bit picky and literal with it's checking.

It asks you to append the numbers to the list. You are actually concatenating them to the list. The effect of those two operations are the same but they are technically different.

To append to a list you use the append method instead of +=. Like this:

var results: [Int] = []

for n in 1...100 {
  if n % 2 != 0 && n % 7 == 0 {
    results.append(n)
  }
}