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Author Topic: 100 TI-BASIC Optimizing Tips  (Read 10298 times)

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Offline Yeong

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100 TI-BASIC Optimizing Tips
« on: December 14, 2011, 12:52:57 pm »
I think we need this thread at some point :)

I'll post some first! :D

1. 2(X-1)→X to 2(X-1→X to 2X-2→X if numbers are small enough.

2. X*100→X to XE2→X

3. (X-3)/5→X to 5-1(X-3→X

4. If X=1:0→X:Goto A:If X=0:1→X:Goto A (I see this a lot) to abs(X-1→X:Goto A to not(X→X:Goto A

5. Disp "A":Disp X:Disp "B" to Disp "A",X,"B
« Last Edit: December 29, 2011, 06:42:41 pm by TBO_Yeong »
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Offline Xeda112358

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Re: 100 TI-BASIC Optimizing Tips
« Reply #1 on: December 14, 2011, 12:57:22 pm »
Quote from: TBO_Yeong on December 14, 2011, 12:52:57 pm
4. If X=1:0→X:If X=0:1→X (I see this a lot) to abs(X-1→X
Also known as not(X→X :P
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Offline Yeong

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Re: 100 TI-BASIC Optimizing Tips
« Reply #2 on: December 14, 2011, 12:58:07 pm »
Quote from: Xeda112358 on December 14, 2011, 12:57:22 pm
Quote from: TBO_Yeong on December 14, 2011, 12:52:57 pm
4. If X=1:0→X:If X=0:1→X (I see this a lot) to abs(X-1→X
Also known as not(X→X :P
:P I just realized and tried to fix it but you noticed it first anyway XD
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Offline harold

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Re: 100 TI-BASIC Optimizing Tips
« Reply #3 on: December 14, 2011, 01:08:52 pm »
1. Disp X   to X  (only as the last command in a program, and messes up Ans)
2. seq(2^X,X,1,8 to 2^cumSum(binomcdf(7,0
« Last Edit: December 14, 2011, 01:09:28 pm by harold »
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Offline Yeong

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Re: 100 TI-BASIC Optimizing Tips
« Reply #4 on: December 14, 2011, 01:12:14 pm »
8. 3+X→Y:Disp Y to Disp 3+X (Unless you want to call up the Ans later :P )
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Offline Juju

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Re: 100 TI-BASIC Optimizing Tips
« Reply #5 on: December 14, 2011, 01:36:51 pm »
Quote from: TBO_Yeong on December 14, 2011, 12:58:07 pm
Quote from: Xeda112358 on December 14, 2011, 12:57:22 pm
Quote from: TBO_Yeong on December 14, 2011, 12:52:57 pm
4. If X=1:0→X:If X=0:1→X (I see this a lot) to abs(X-1→X
Also known as not(X→X :P
:P I just realized and tried to fix it but you noticed it first anyway XD
I think you forgot an Else before the second If there.
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Offline Yeong

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Re: 100 TI-BASIC Optimizing Tips
« Reply #6 on: December 14, 2011, 02:59:36 pm »
You don't need the Else there. ;)
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Offline Deep Toaster

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Re: 100 TI-BASIC Optimizing Tips
« Reply #7 on: December 14, 2011, 08:02:13 pm »
X/100 to sub(X is a very useful one.
« Last Edit: December 29, 2011, 01:58:19 pm by Deep Thought »
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Offline Yeong

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Re: 100 TI-BASIC Optimizing Tips
« Reply #8 on: December 29, 2011, 12:54:16 pm »
I see many people using this getKey routine:
0→K
While K=0
getKey→K
End

It could be optimized to this:
Repeat K:getKey→K:End

EDIT: Here's jacobly's way if you're interested:
0:Repeat Ans:getKey:End
« Last Edit: December 29, 2011, 01:00:13 pm by TBO_Yeong »
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Offline Deep Toaster

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Re: 100 TI-BASIC Optimizing Tips
« Reply #9 on: December 29, 2011, 01:47:29 pm »
You can take out the 0 and just use Repeat Ans:getKey:End because getKey returns 0 if no key was pressed.
« Last Edit: December 29, 2011, 01:47:40 pm by Deep Thought »
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Offline Builderboy

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Re: 100 TI-BASIC Optimizing Tips
« Reply #10 on: December 29, 2011, 02:34:19 pm »
Quote from: Deep Thought on December 14, 2011, 08:02:13 pm
X/100 to sub(X is a very useful one.

Might as well do .1X since sub() is a 2 byte token :P
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Offline Sorunome

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Re: 100 TI-BASIC Optimizing Tips
« Reply #11 on: December 29, 2011, 02:41:44 pm »
Code: [Select]
:Disp "Blah"
:Disp "More Blah"optimized:
Code: [Select]
:Disp "Blah","More Blah
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Offline Deep Toaster

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Re: 100 TI-BASIC Optimizing Tips
« Reply #12 on: December 29, 2011, 06:03:23 pm »
Quote from: Builderboy on December 29, 2011, 02:34:19 pm
Quote from: Deep Thought on December 14, 2011, 08:02:13 pm
X/100 to sub(X is a very useful one.
Might as well do .1X since sub() is a 2 byte token :P
That divides by ten, not 100.
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Offline Yeong

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Re: 100 TI-BASIC Optimizing Tips
« Reply #13 on: December 29, 2011, 06:37:43 pm »
Quote from: Sorunome on December 29, 2011, 02:41:44 pm
Code: [Select]
:Disp "Blah"
:Disp "More Blah"optimized:
Code: [Select]
:Disp "Blah","More Blah
Don't
Code: [Select]
:Disp "Blah
:Disp "More Blah
takes less space?
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Offline ZippyDee

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Re: 100 TI-BASIC Optimizing Tips
« Reply #14 on: December 29, 2011, 06:40:15 pm »
Quote from: TBO_Yeong on December 14, 2011, 02:59:36 pm
You don't need the Else there. ;)
yes you do.... otherwise no matter what X would be 1 by the end.
« Last Edit: December 29, 2011, 06:42:55 pm by ZippyDee »
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