Write a Swift program to compute the sum of all the elements of a given array

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func sumofnumbers(_ arra: [Int]) -> Int {
    return arra.reduce(0, +)
}
print(sumofnumbers([-7, 5, 2, 0]))
print(sumofnumbers([3, 4, 5, 8]))
print(sumofnumbers([2, 6, 2, 1]))

 

Output:

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Write a Swift program to check if a given array of integers contains 4 twice, or 8 twice
Write a Swift program to check if a given array of integers contains 4 twice, or 8 twice -

func checknumbers(_ a: [Int]) -> Bool {
    if a == [4, 4...

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