public static class MathToolss
{
    public static bool ListEquals<T>(this IEnumerable<T> one, IEnumerable<T> another)
    {
        if (one.Count() != another.Count()) return false;
        return (one.Except(another)).Count() == 0;
    }
}

使用

    
public class TSTest : MonoBehaviour
{
    List<int> AAA;
    List<int> BBB;
 private void Start()
 {
     AAA = new List<int>();
     BBB = new List<int>();
     AAA.Add(2);
     AAA.Add(1);
     AAA.Add(5);
     AAA.Add(4);
     BBB.Add(4);
     BBB.Add(2);
     BBB.Add(5);
     BBB.Add(1);
     Debug.LogError(AAA.ListEquals(BBB));
 }

}