C#

amatbrewer wrote:

While playing around with a Black Jack program, I got wondering about the best way to do a decision matrix in C#.
What I am thinking of is basically a 2 dimensional matrix with each row/col combination containing a value representing 1 of a number of different options (e.g. Hit, Stand, Double, Split, etc).
Is a 2 dimensional array the best way to implement it, or is there a better method?

enum Action {
   Hit = 0,
   Stand = 1,
   DD = 2,
   Split = 3
}
 
private static Action[][] _decision = new Action[][] 
// Dealer showing ->      2      3      4       5      6 ...
// You showing    V
{ new Action[] */ 2 */ {  Hit,  Hit,   Stand,   DD,   Hit, ... },
  new Action[] /* 3 */ {  Hit,  Hit,   Stand,   Hit,  DD, ... },
.
.
.
  new Action[] /*21 */ { Stand, Stand, Stand, Stand, ...}
}
 
private static Action Decision(Int32 dealerShow, Int32 meShow) {
   return _decision[meShow - 2][dealerShow - 2];
}

amatbrewer wrote:

Thanks for the reply!

DateTime[] dt...;
Array.Sort(dt);

public class DTComparer : IComparer {
    public int Compare(object odt1, object odt2) {
        DateTime dt1=(DateTime)odt1;
        DateTime dt2=(DateTime)odt2;
        long diff=dt1.Ticks-dt2.Ticks;
        if (diff<0) return -1;
        if (diff>0) return 1;
        return 0;
    }
}
public void demo() {
    DateTime[] dt=new DateTime[]{
        DateTime.Now.AddDays(1),
        DateTime.Now.AddMinutes(1),
        DateTime.Now.AddHours(1)
    };
    log(dt);
    Array.Sort(dt, new DTComparer());
    log(dt);
}

public void log(DateTime[] dta) {
    log("DateTime[]:");
    foreach (DateTime dt in dta) log("    "+dt.ToString());
}