//phep tru
static SoLon Tru(SoLon a, SoLon b)
{
if (b.ToString() == "0")
{
return(a);
}
else if (a.ToString() == "0")
{
return(b);
}
var max = Math.Max(a.arr.Length, b.arr.Length);
var mangLon = MakeSameLength(a.arr, max);
var mangNho = MakeSameLength(b.arr, max);
if (a.Compareto(b) == -1)
{
mangLon = b.arr;
mangNho = a.arr;
}
var ret = TruMang(mangLon, mangNho);
return(new SoLon(ret));
}
//phep cong
static SoLon Cong(SoLon a, SoLon b)
{
if (a.ToString() == "0")
{
return(b);
}
if (b.ToString() == "0")
{
return(a);
}
var ret = CongMang(a.arr, b.arr);
return(new SoLon(ret));
}