Tohr01

extension Array where Element == Int {
    struct difference {
        var added: [Int]
        var removed: [Int]
    }
    
    func diff(from arr: [Int]) -> Array.difference? {
        if Set(self) == Set(arr) {
            return nil
        }

Tohr01

func left_slide(_ arr: [Int]) -> [Int] {
    // Check if arr is empty
    if arr.isEmpty { return [] }
    
    // Make arr mutable
    var mutable_arr : [Int] = []
    
    // Seperate 0's and other numbers
    var zero_arr = arr.filter{$0 == 0}
    mutable_arr = arr.filter{$0 != 0}

Tohr01

from argparse import ArgumentParser

# Parse args
parser = ArgumentParser(description='Pyramide Calc')
parser.add_argument('n', help='Highest number of hits', type=int)

args = parser.parse_args()
n = args.n

# Sums all numbers from 1 to n