"return" statement with return value in Swift
func containNumber(numbers: [Int], number: Int) -> Bool {
for currentNumber in numbers {
if currentNumber == number {
return true
}
}
return false
}
let numbers = [1, 2, 3]
let isContain2 = containNumber(numbers, 2)
//isContain2 is true
let isContain4 = containNumber(numbers, 4)
//isContain4 is false
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