Swift Array Programming Exercises: Rotate the elements of an array of integers to left direction

Swift Array Programming: Exercise-5 with Solution

Write a Swift program to rotate the elements of an array of integers to left direction. Therefore {1, 2, 3} yields {2, 3, 1}.

Pictorial Presentation:

Sample Solution:

Swift Code:

func rotate_left_3(_ arra: [Int]) -> [Int] {
    var new_arra = arra
      new_arra.removeFirst()
    new_arra.append(arra.first!)
      return new_arra
}

print(rotate_left_3([1, 2, 3]))
print(rotate_left_3([-1, 0, 1]))
print(rotate_left_3([0, 10, 0]))

Sample Output:

[2, 3, 1]
[0, 1, -1]
[10, 0, 0]

Swift Programming Code Editor:

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