i have no idea how to represent even or odd numbers only in swift.

Question

For this challenge, we'd like to know in a range of values from 1 to 100, how many numbers are both odd, and a multiple of 7.

To start us off, I've written a for loop to iterate over the desired range of values and named the local constant n. Your job is to write an if statement inside the for loop to carry out the desired checks.

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

Hint: To check for an odd number use the not operator to check for "not even"

operators.swift

var results: [Int] = []

for n in 1...100 {
    // Enter your code below
    if n == n % 3 = 0 && n == (7,14,21,28,35,42,49,56,63,70) 
        results.append(n)
    // End code 
}

Answer 1 · 2018-01-18T03:28:51Z

January 18, 2018 3:28am

Hi Conor -

For this task you need to use the modulos operator (you can research Swift documentation to find out more about it), but basically

% is the modulo operator, For example 5 % 3 would result in 2.

If you have some numbers x and y, x % y gives you just the remainder of x divided by y.

So in the example 5 % 2, 5 divided by 3 is 1 with remainder 2, so the answer is 2.

If there is no remainder to x divided by y, the answer is zero, so for example, 6 %

var results: [Int] = []

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

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

    results.append(n)

    }

    // End code 
}

See if you understand the code after researching the modulus operator

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Conor Mosier

Conor Mosier

i have no idea how to represent even or odd numbers only in swift.

1 Answer

Jeff McDivitt

Jeff McDivitt