static void Main(string[] args)
{
Singer[] singers = new Singer[5] {
new Singer("아이유", 28, 8),
new Singer("자우림", 40, 5),
new Singer("거미", 35, 5),
new Singer("이승철", 50, 15),
new Singer("태진아", 65, 5)
};
foreach (Singer sing in singers)
{
Console.WriteLine(sing.ToString());
}
Console.WriteLine("======================================");
Console.WriteLine();
Array.Sort(singers); //나이로 정렬
foreach (Singer sing in singers)
{
Console.WriteLine(sing.ToString());
}
Console.WriteLine("======================================");
Console.WriteLine();
SingerNameComparer nameComparer = new SingerNameComparer();
Array.Sort(singers, nameComparer);
foreach (Singer sing in singers)
{
Console.WriteLine(sing.ToString());
}
}
public int CompareTo(object obj) //IComparable 인ㅌ페이스 구현 하면 나오는 CompareTo 메서드
{
#region 나이 기준
//나이가 크면 1, 나이가 작으면 -1, 나이가 같으면 0
Singer sing = obj as Singer;
if (sing == null)
{
return(0);
}
if (this.Age > sing.Age)
{
//return 1; // 오름차순
return(-1); // 내림차순 1이면 바꾸고 -1이면 안바꾸고
}
else if (this.Age < this.Age)
{
//return -1; //오름차순
return(1); //내림차순
}
else
{
return(0);
}
#endregion
}
public int CompareTo(object obj)
{
//나이가 크면 1, 작으면 -1, 같으면 0
Singer sing = obj as Singer;
if (this.Age > sing.Age)
{
return(-1);
}
else if (this.Age < sing.Age)
{
return(1);
}
else
{
return(0);
}
}
public int CompareTo(object obj)// IComparable
{
//나이가 크면 1 나이가 적으면 -1 나이가 같으면 0
Singer sing = obj as Singer;
if (this.Age > sing.Age)
{
return(1); //역순 -1
}
else if (this.Age < sing.Age)
{
return(-1); //역순 1
}
else
{
return(0);
}
}
public int Compare(object x, object y) //문자열은 크다작다가 없기 때문에.
{
//이름이 크면 1, 작으면 -1, 같으면 0
Singer first = x as Singer;
Singer second = y as Singer;
if (first.Name.CompareTo(second.Name) == 1)
{
return(1);
}
else if (first.Name.CompareTo(second.Name) == -1)
{
return(-1);
}
else
{
return(0);
}
}
public int Compare(object x, object y) //IComparer
{
//이름가 크면 1 이름가 적으면 -1 이름가 같으면 0
Singer first = x as Singer;
Singer second = y as Singer;
if (first.Name.CompareTo(second.Name) == 1)
{
return(1); //역순 -1
}
else if (first.Name.CompareTo(second.Name) == -1)
{
return(-1); //역순 1
}
else
{
return(0);
}
}
public int Compare(object x, object y)
{
//이름이 크면 1, 이름이 작으면 -1, 이름이 같으면 0
Singer first = x as Singer;
Singer secend = y as Singer;
if (first.Name.CompareTo(secend.Name) == 1)
{
return(1);
}
else if (first.Name.CompareTo(secend.Name) == -1)
{
return(-1);
}
else
{
return(0);
}
}
public int Compare(object x, object y) // Compare는 인자가 두개
{
//나이가 크면 1, 나이가 작으면 -1, 나이가 같으면 0
Singer first = x as Singer;
Singer second = y as Singer;
if (first.Name.CompareTo(second.Name) == 1)
{
return(1); // 오름차순
}
//return -1; // 내림차순 1이면 바꾸고 -1이면 안바꾸고
else if (first.Name.CompareTo(second.Name) == -1)
{
return(-1); //오름차순
}
//return 1; //내림차순
else
{
return(0);
}
}
public int CompareTo(object obj)
{
Singer sing = obj as Singer;
if (sing == null)
{
return(0);
}
if (this.Age > sing.Age)
{
return(-1);
}
else if (this.Age < sing.Age)
{
return(1);
}
else
{
return(0);
}
}
static void Main(string[] args)
{
Singer[] singers = new Singer[5] {
new Singer("아이유", 28, 8),
new Singer("자우림", 40, 5),
new Singer("거미", 35, 5),
new Singer("이승철", 50, 15),
new Singer("태진아", 65, 5)
};
while (true)
{
Console.Write("1. 목록보기 2. 나이 오름차순정렬 3. 나이 내림차순정렬 4. 이름 오름차순정렬 5. 나이 내림차순정렬 ");
int s = Convert.ToInt32(Console.ReadLine());
SingerNameComparer nameComparer = new SingerNameComparer();
switch (s)
{
case 1:
Console.WriteLine();
for (int a = 0; a < singers.Length; a++)
{
Console.WriteLine(singers[a].ToString());
}
Console.WriteLine("======================================"); // 이름
Console.WriteLine();
break; // 목록출력
case 2:
//foreach (Singer sing in singers)
//{
// Console.WriteLine(sing.ToString());
//}
Console.WriteLine();
object[] singer1 = (object[])singers.Clone();
Array.Sort(singer1);
foreach (Singer sing in singer1)
{
Console.WriteLine(sing.ToString());
}
Console.WriteLine("======================================"); // 이름
Console.WriteLine();
break;
case 3:
//foreach (Singer sing in singers)
//{
// Console.WriteLine(sing.ToString());
//}
Console.WriteLine();
Array.Sort(singers, nameComparer); // 이름으로 정렬
foreach (Singer sing in singers)
{
Console.WriteLine(sing.ToString());
}
Console.WriteLine("======================================"); // 이름
Console.WriteLine();
break;
case 4:
//foreach (Singer sing in singers)
//{
// Console.WriteLine(sing.ToString());
//}
Console.WriteLine();
Array.Sort(singers);
foreach (Singer sing in singers)
{
Console.WriteLine(sing.ToString());
}
Console.WriteLine("======================================"); // 나이
Console.WriteLine();
break;
case 5:
//foreach (Singer sing in singers)
//{
// Console.WriteLine(sing.ToString());
//}
Console.WriteLine();
Array.Sort(singers, nameComparer); // 이름으로 정렬
foreach (Singer sing in singers)
{
Console.WriteLine(sing.ToString());
}
Console.WriteLine("======================================"); // 이름
Console.WriteLine();
break;
}
}
}
