quick-sort.swift

func quickSort(sortElms: [Int]) -> [Int] {
   let arr = sortElms
    guard arr.count > 0 else {
        return arr
    }
    let first = arr.first
    let left = arr.filter({$0 < first})
    let right = arr.filter({$0 > first})
    return quickSort(left)+[first!]+quickSort(right)
}
let sortElms = [13423, 234, 243, 234, 234, 56, 56, 7778, 56756, 2, 3, 0, 8, 9, 7, 30043587943, 34523789, 342578945, 2323]
let quickSortResult = quickSort(sortElms)
print("quickSortResult: \(quickSortResult)")
// result
// [0, 2, 3, 7, 8, 9, 56, 234, 243, 2323, 7778, 13423, 56756, 34523789, 342578945, 30043587943]