03/16 배열 선언, 생성, 요소 삭제 연습

 

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Study04
{
    class Program
    {
        static void Main(string[] args)
        {
            new App();
        }
    }
}

 

App.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Study04
{
    public class App
    {        
        public App()
        {
            //Fruits배열변수 선언
            Fruits[] arrFruits;

            //배열 인스턴스화
            arrFruits = new Fruits[3];

            //Fruits 객체 생성
            Fruits fruits1 = new Fruits(new FruitsData("사과"));
            Fruits fruits2 = new Fruits(new FruitsData("복숭아"));
            Fruits fruits3 = new Fruits(new FruitsData("멜론"));

            //배열 요소에 추가
            arrFruits[0] = fruits1;
            arrFruits[1] = fruits2;
            arrFruits[2] = fruits3;

            //배열 요소를 출력
            foreach(Fruits fruits in arrFruits)
            {
                if(fruits != null)
                {
                    Console.WriteLine(fruits.GetName());
                }
                else
                {
                    Console.WriteLine("[Empty]");
                }
            }

            //배열요소에서 이름이 "사과"인 Fruits객체를 검색
            Fruits foundFruits = null;
            string searchName = "사과";
            foreach (Fruits fruits in arrFruits)
            {
                if (fruits != null && fruits.GetName() == searchName)
                {
                    foundFruits = fruits;
                    Console.WriteLine("이름이 {0}인 객체를 찾았습니다.", searchName);
                    break;
                }
            }
            if(foundFruits == null)
            {
                Console.WriteLine("이름이 {0}인 객체를 찾지 못했습니다.", searchName);
            }

            //배열요소에서 이름이 "복숭아"인 Fruits객체를 삭제
            bool foundPlug = false;
            searchName = "복숭아";

            for (int i = 0; i < 3; i++)
            {
                if (arrFruits[i] != null && arrFruits[i].GetName() == searchName)
                {
                    Console.WriteLine("이름이 {0}인 객체를 삭제합니다.", searchName);
                    arrFruits[i] = null;
                    foundPlug = true;
                    break;
                }
            }
            if (foundPlug == false)
            {
                Console.WriteLine("이름이 {0}인 객체를 찾지 못했습니다.", searchName);
            }

            //배열 요소를 출력            
            foreach (Fruits fruits in arrFruits)
            {
                if (fruits != null)
                {
                    Console.WriteLine(fruits.GetName());
                }
                else
                {
                    Console.WriteLine("[Empty]");
                }
            }
        }
    }
}

 

Fruits.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Study04
{
    public class Fruits
    {
        public FruitsData fruitsData;
        public Fruits()
        {

        }
        public Fruits(FruitsData fruitsData)
        {
            this.fruitsData = fruitsData;
        }
        public string GetName()
        {
            return fruitsData.name;
        }
    }
}

 

FruitsData.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Study04
{
    public class FruitsData
    {
        public string name;
        public FruitsData()
        {

        }
        public FruitsData(string name)
        {
            this.name = name;
        }
    }
}