func minimumSwaps(arr []int32) int32 {

    swaps := int32(0)
    i := 0
    for i < len(arr) {
        if arr[i] != int32(i+1) {
            arr[arr[i]-1], arr[i] = arr[i], arr[arr[i]-1]
            swaps++
        } else {
            i++
        }
    }

    return swaps
}