Day1.mo

import Nat "mo:base/Nat";
import Array "mo:base/Array";
//Make By Bình An, LADS team

actor {
    //Challenge 1
    public func add(n : Nat, m : Nat) : async Nat { return n+m; };

    //Challenge 2
    public func square(n : Nat) : async Nat{  return n*n;  };

    //Challenge 3
    public func days_to_second(n : Nat) : async Nat{  return n*24*60*60;  };

    //Challenge 4
    var Count : Nat = 0;
    public func increment_counter() : async Nat{
      Count += 1;
      return Count;
    };
    public func clear_counter() : async Nat{
      Count := 0;
      return Count;
    };

    //Challenge 5
    public func divide(n : Nat , m : Nat) : async Bool{  return (n%m==0);  };

    //Challenge 6
    public func is_even(n : Nat) : async Bool{  return (n%2==0);  };

    //Challenge 7
    public func sum_of_array(arr : [Nat]) : async Nat{
      var Sum : Nat = 0;
      if(arr.size() != 0){  for(value in arr.vals()){Sum+=value;}  };
      return Sum;
    };

    //Challenge 8
    public func maximum(arr : [Nat]) : async Nat{
      var Max : Nat = 0;
      if(arr.size() != 0){
        for(value in arr.vals()){
          if(value > Max){Max := value;};
        }
      };
      return Max;
    };

    //Challenge 9
    public func remove_from_array(arr : [Nat], n : Nat) : async [Nat]{
      var arrN : [Nat] = [];
      for(value in arr.vals()){
        if(value != n){arrN :=  Array.append<Nat>(arrN, [value]);}
      };
      return (arrN);
    };

    //Challenge 10
    public func sort(arr:[Nat]): async [Nat]{
      return Array.sort<Nat>(arr, func(a,b){Nat.compare(a,b)});
    };
};