void main() {
  var animals = <Animal>[
    Animal(id: 1,name: 'Dophon', group: 'mammal'),
    Animal(id: 2,name: 'Snake', group: 'reptile'),
    Animal(id: 3,name: 'Baracuda', group: 'fish'),
    Animal(id: 4,name: 'Cat', group: 'mammal'),
    Animal(id: 5,name: 'Elephant', group: 'mammal'),
    Animal(id: 6,name: 'Kakak Tua', group: 'bird'),
    Animal(id: 7,name: 'Komodo', group: 'reptile'),
  ];
  
  // Soal 1: search with group 'mamal'
//   final mammalGroup = <Animal>[];
//   final searcMammal = animals.where((e) => e.group == 'mammal');
//   mammalGroup.addAll(searcMammal);
  
//   for(var mammal in mammalGroup){
//     print('Name is :: ${mammal.name} and Group is ${mammal.group}');
//   }
  
  // Soal 2: Sorted
  final mammalSorted = <Animal>[];
  animals.sort((x, y) => y.group.compareTo(x.group));
  mammalSorted.addAll(animals);
  
//   for(var mammal in mammalSorted){
//     print('Name is :: ${mammal.name} and Group is ${mammal.group}');
//   }
  
  // Soal 4: Merge
  final newAnimals = <Animal>[
    Animal(id: 1,name: 'Crocodile', group: 'reptile'),
    Animal(id: 2,name: 'Eagle', group: 'bird'),
    Animal(id: 3,name: 'Cat', group: 'mammal'),
  ];
  
  animals.addAll(newAnimals);
//   for(var mammal in animals){
//     print('Name is :: ${mammal.name} and Group is ${mammal.group}');
//   }
  
  // Soal 5: Timer Delay
  int n = 5;
  do { 
      if (n == 0){
        print('And close the dor'); 
      }else {
        print(n); 
      }
      Future.delayed(Duration(seconds: 1));
      n--; 
  }while(n>=0); 
}

class Animal{
  int id;
  String name;
  String group;
  
  Animal({required this.id, required this.name, required this.group});
}