TI-BASIC:Mastermind

Mastermind is a fun game that involves trying to break a random code of five numbers (1-9) in fifteen guesses or less. To help assist you with the code-breaking, a clue is displayed below each number. If the number is correct and in the right position, a star (*) will be displayed. If the number is correct but in the wrong position, a plus (+) will be displayed. And if the number is simply wrong, a minus (-) will be displayed. Try out the game and try to understand and think through the code.

The Code

:randInt(1,9,5→L1
:For(X,1,15
:0→dim(L2
:Repeat Ans=105 and 5=dim(L2
:ClrHome
:For(Y,1,dim(L2
:Output(1,Y,L2(Y
:End
:Repeat Ans
:getKey
:End
:If Ans=22
:Goto Q
:If Ans=45
:ClrList L2
:If Ans=23 and dim(L2
:dim(L2)-1→dim(L2
:If 5>dim(L2) and 2>abs(5-abs(5-abs(Ans-83
:26-3int(.1Ans)+10fPart(.1Ans→L2(1+dim(L2
:End
:" // 1 space
:For(Y,1,5
:Ans+sub("-+*",1+max(L2(Y)=L1)+(L2(Y)=L1(Y)),1
:End
:Output(2,1,sub(Ans,2,5
:rand(E2  // scientific E ([2nd][,])
:If not(min(L2=L1
:End
:Disp sub("FAIL!WIN! ",1+5(X<16),5
:Lbl Q