Array Left Rotation

Main.kt

private fun execute(inputArray: Array<Int>, inputRotation: Int): Array<Int> {

    // left rotation is basically the number of rotations
    // divided by array size. The rest of this division is
    // the position where first index will be placed after
    // rotation.

    val output = arrayListOf<Int>()

    val rest = inputRotation%inputArray.size

    // filling from rest until the end
  
    for (index in rest until inputArray.size) {
        val inputArrayValue = inputArray[index]
        output.add(inputArrayValue)
    }

    // filling from 0 to rest index
    
    for (index in 0 until rest) {
        val inputArrayValue = inputArray[index]
        output.add(inputArrayValue)
    }

    return output.toTypedArray()
}