Swift Array Programming Exercises: Test if the value 5 appears in a given array of integers exactly 2 times, and no 5's are next to each other

Last update on December 21 2024 10:29:55 (UTC/GMT +8 hours)

Write a Swift program to test if the value 5 appears in a given array of integers exactly 2 times, and no 5's are next to each other.

Pictorial Presentation:

Sample Solution:

Swift Code:

func test_5(array_nums: [Int]) -> Bool {
    var ctr = 0
    
    for num in array_nums {
        if num == 5 {
            ctr += 1
        }
    }
    
    for x in 0..<array_nums.count-1 {
        if array_nums[x] == 5 && array_nums[x+1] == 5
        {
            return false
        }
    }
    
    return ctr == 2
}

print(test_5(array_nums: [5, 1, 5, 1, 3]))
print(test_5(array_nums: [5, 1, 5, 5]))
print(test_5(array_nums: [5, 4, 5, 5, 4]))

Sample Output:

true
false
false

Swift Programming Code Editor:

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