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iOS

odd number and a multiple of 7

I was able to solve this by using code from another question asked on this forum but I'm having trouble finding the difference between the code that worked and my own.

xcode shows the array getting the same results

the code I wrote:

var results: [Int] = []

for n in 1...100 {
    // Enter your code below
    if n%2 != 0 && n%7 == 0 {
        results += [n]
    }
    // End code
}

the code that worked:

var results: [Int] = []

for n in 1...100 {
    // Enter your code below
    if n%2 != 0 && n%7 == 0 {
        results.append(n)
    }
    // End code
} 

1 Answer

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! Your code doesn't produce any errors, but what it's doing is appending an array containing n instead of just the n. I advise you to run this in the playground. The end result for the correct code will be that results will contain an array with [7, 21, 35, 49, 63, 77, 91], but your results array will look like this [[7], [21], [35], [49], [63], [77], [91]]. You are inadvertently creating a multidimensional array :smiley:

Hope this helps! :sparkles: