Sắp xếp tăng dần trong Pascal

Program sapXep;
Var M: array[1..10] of integer;
    i,j,n: byte;
    tam: integer;
Begin
    Write('Nhap so phan tu n:');Readln(n);
    For i:=1 to n do
    Begin Write('M[',i,']='); Readln(M[i]); End;
    For i:=1 to n-1 do
    For j:=i+1 to n do if M[j] <=M[i] then 
    Begin Tam:= M[i]; M[i]:=M[j]; M[j]:=tam; End;
    Write('Sau khi sap xep: ');
    For i:=1 to n do Write(M[i],';');
    Readln;
End.