C# List、ArrayList集合的自定義排序x

List集合中存在數個玩家Player

實現排序：

　　　　按防護力升序，若相同則按攻擊力降序

 

方法有兩種：

 

1.  類外定義Sort方法 實現接口 IComparer

public class Sort : IComparer<Player>
{
public int Compare(Player a, Player b)
{
if (a is Player && b is Player)
{

if (a.defence == b.defence)
{
return b.attack - a.attack;
}
else
{
return a.defence - b.defence;
}
}
return 0;
}
}

使用時：List集合 players---> players.Sort(new Sort());

 

2.在玩家類Player 實現接口 : IComparable

public int CompareTo(object obj)
{
if(obj is Player)
{
Player other = obj as Player;
if(this.defence == other.defence)
{
return other.attack - this.attack;
}
else
{
return this.defence - other.defence;
}
}
return 0;
}

使用： players.Sort();