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

Jordan North
Jordan North
1,816 Points
Posted by Jordan North
Jordan North
1,816 Points

Need HELP!!

Im am really stuck here cant think of what to do.

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

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

1 Answer

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

You have the right idea.

The syntax for using the mod operator looks something like this

number % divisor

We can compare the value of the remainder to some other value using comparison operators like != (not equal) or == (equal)

number % divisor != 0
number % divisor == 0

Combining these concepts we can test if its an odd number and a multiple of 7

If a number is odd, then dividing it by 2 should have a remainder that is not equal to 0. If its a multiple of 7, then dividing it by 7 should have a remainder of 0. You can use the modulo operator (%) to test this. 

var results: [Int] = []

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

    // Check if its odd AND if its a multiple of 7
    if (n % 2 != 0 ) && (n % 7 == 0){
    results.append(n)
    }
    // End code 
}

For more information on the mod operator see the Swift documentation