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swift Programming Exercises

Swift Basic Programming Exercise: Test whether a value presents sequentially three times in an array of integers or not

Swift Basic Programming: Exercise-28 with Solution

Write a Swift program to test whether a value presents sequentially three times in an array of integers or not.

Pictorial Presentation:

Swift Basic Programming Exercise: Test whether a value presents sequentially three times in an array of integers or not.

Sample Solution:

Swift Code:

func test_Triples(_ input: [Int]) -> Bool {
        for (index, number) in input.enumerated() {
        let thirdIndex = index + 2
        let secondIndex = index + 1
        
        if secondIndex < input.endIndex && number == input[secondIndex] && number == input[thirdIndex] {
            return true
        }
    }
    return false
}
print(test_Triples([1, 1, 1, 2, 2]))
print(test_Triples([1, 1, 1, 2, 2, 2, 2]))
print(test_Triples([1, 1, 3, 3, 1]))

Sample Output:

true
true
false

Swift Programming Code Editor:

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