Swift Array Programming Exercises: Compute the sum of the first 2 elements of a given array of integers. Return 0 if the length of the given array is 0 and return the first element value If the array length is less than 2

Last update on June 14 2025 05:35:40 (UTC/GMT +8 hours)

Write a Swift program to compute the sum of the first 2 elements of a given array of integers. Return 0 if the length of the given array is 0 and return the first element value If the array length is less than 2.

Pictorial Presentation:

Sample Solution:

Swift Code:

func array_sum2(_ a: [Int]) -> Int {
    let size = a.count
     if size>1
       {
         return a[0] + a[1]
       }
     else
       {
           return a[0]
       }
}

print(array_sum2([1, 2, 3]))
print(array_sum2([1, 1]))
print(array_sum2([10]))

Sample Output:

3
2
10

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