Swift Array Programming Exercises: Find the largest value from the first, last, and middle values in a given array of integers and length will be at least 1

Last update on December 21 2024 10:28:39 (UTC/GMT +8 hours)

Write a Swift program to find the largest value from the first, last, and middle values in a given array of integers and length will be at least 1.

Pictorial Presentation:

Sample Solution:

Swift Code:

 func max_three(_ a: [Int]) -> Int {
    guard a.count % 2 == 1 else {
        return 0
    }
    
    let middle_index = a.count / 2
    
    if a.first! > a.last! && a.first! > a[middle_index] {
        return a.first!
    } else if a.last! > a.first! && a.last! > a[middle_index] {
        return a.last!
    } else {
        return a[middle_index]
    }
}

print(max_three([1, 2, 3]))
print(max_three([-1, -5, -7]))
print(max_three([0, 1, 9]))

Sample Output:

3
-1
9

Swift Programming Code Editor:

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