Re: Programming Puzzle 2 - Another Simple Loop
Lily, welcome to the message board, and to this forum. This forum provides a series of puzzles that one is asked to solve using only xbasic. It's intended as a sort of teaching / learning experience. So dig in, try your hand, and let us know where you get stuck. By all means show us your solution(s).
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Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.
When you do post
First, make sure you are posting your question in the correct forum. For example, if you post an issue regarding Desktop applications on the Mobile & Browser Applications board , not only will your question not be seen by the appropriate audience, it may also be removed or relocated.
The more detail you provide about your problem or question, the more likely someone is to understand your request and be able to help. A sample database with a minimum of records (and its support files, zipped together) will make it much easier to diagnose issues with your application. Screen shots of error messages are especially helpful.
When explaining how to reproduce your problem, please be as detailed as possible. Describe every step, click-by-click and keypress-by-keypress. Otherwise when others try to duplicate your problem, they may do something slightly different and end up with different results.
A note about attachments
You may only attach one file to each message. Attachment file size is limited to 2MB. If you need to include several files, you may do so by zipping them into a single archive.
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Programming Puzzle 2 - Another Simple Loop
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Re: Programming Puzzle 2 - Another Simple Loop
I am new,so i won't post any solutions before i get a comprehensive understanding of this forum.
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Re: Programming Puzzle 2 - Another Simple Loop
Welcome to the party. Don't get frustrated if your wheels start spinning and you can't get traction. Post questions here, or drop me a private message using the message facility the board provides. -- tom
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Re: Programming Puzzle 2 - Another Simple Loop
Tom, and everyone who contributed to these discussions.
Obviously, I've come very late to this party, so I won't post any solutions. But I am working through each puzzle, trying to solve it first and then reading the thread to see what others have done. This is very useful; I just want to say "thanks" to all of you for the work. It really helps this Alpha Five newbie.
sh
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Re: Programming Puzzle 2 - Another Simple Loop
Jeb, very nice.
have you discovered how to "export" a saved script? And then how to "import" a previously exported script?
-- tom
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Re: Programming Puzzle 2 - Another Simple Loop
Code:dim input as C dim reverse_input as C dim reconstruct_input as C dim qx as N dim length as N input=ui_get_text("String Please","Please enter a string that contains 10+ characters:") length=len(input) IF length <11 ui_msg_box("Error","Your string must contain 10+ characters; nothing less!") end END IF reverse_input="" FOR qx = length TO 1 step -1 reverse_input=reverse_input+(substr(input, qx, 1)) next msgbox("Reversed","Here is your string reversed: "+reverse_input) reconstruct_input="" FOR qx = length TO 1 step -1 reconstruct_input=reconstruct_input+(substr(reverse_input, qx, 1)) next msgbox("Reversed, Reversed", "Here is your sting reversed,reversed or back to normal: "+reconstruct_input)
Last edited by jeb richardson; 08-03-2011, 04:04 PM.
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Re: Programming Puzzle 2 - Another Simple Loop
Originally posted by RobPolley View PostI'm struggling to learn programming, with xbasic. I'd like to copy & paste these into Alpha to see them run, but I'm not sure where; would the code go onto a form?
Thank you.
--Rob
For an Xbasic Tutorial go here - V10 Help file
Under the "Contents" select "Tutorials" then "Learning Xbasic"
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Re: Programming Puzzle 2 - Another Simple Loop
I'm struggling to learn programming, with xbasic. I'd like to copy & paste these into Alpha to see them run, but I'm not sure where; would the code go onto a form?
Thank you.
--Rob
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Re: Programming Puzzle 2 - Another Simple Loop
Thanks, Mike.
-- t
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Re: Programming Puzzle 2 - Another Simple Loop
Your approach requires Alpha to increment both the loop counter ( i ) and the character position counter ( x ).
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Re: Programming Puzzle 2 - Another Simple Loop
Nice work gents.
You're as "loopy" as me!
Mike, Ray's comment is a good one. Your approach requires Alpha to increment both the loop counter ( i ) and the character position counter ( x ). Notice that Govindan's approach uses the loop counter itself as a position counter of sorts. The result - only one variable is being changed as the loop iterates through the characters. I've been down this road myself a few times. I've learned that it pays to simplify when possible. Debugging scripts with multi-variable "counters" is tedious and error prone, at least that's been my experience.
Govindan, you get bonus points for "reconstructing" the original string. Good work.
Thanks to all for your submittals.
If others have questions about these scripts please post here. I'm retreating to the puzzle shack to start cooking up another one.
-- tom
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Re: Programming Puzzle 2 - Another Simple Loop
Orignally I posted an answer to the puzzle- this one just changed to a function of the reversing scheme
sorry for double posting
gandhi
Code:'Date Created: 04-Jun-2011 06:28:39 AM 'Last Updated: 04-Jun-2011 06:28:39 AM 'Created By : Govindan Gandhi 'Updated By : Govindan Gandhi FUNCTION reverse_string AS C (input_string AS C ) dim i as n dim length as n length = len(input_string) for i = length to 1 step -1 reverse_string=reverse_string+(substr(input_string,i,1)) next END FUNCTION dim vInput_string as c dim vReversed_string as c dim vOriginal_string as c vInput_string = ui_get_text("Enter string","Please enter a string of 10 characters or more:") if len(vInput_string)<11 then msgbox("error","You must enter 10 characters or more!") end end if vreversed_string=reverse_string(vInput_string) msgbox("Reversed string", "Here is your string reversed: " + vReversed_string) vOriginal_string=reverse_string(vreversed_string) msgbox("Back to original", "Your original string: " + vOriginal_string)
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Re: Programming Puzzle 2 - Another Simple Loop
for i = 1 to vnum_char
vReversed =vReversed + substr(vchar_str,vnum_char-x,1)
x = x + 1
next
Code:for i = vnum_char to i step -1 vReversed =vReversed + substr(vchar_str,i,1) next
Last edited by Ray in Capetown; 06-04-2011, 06:03 AM.
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Re: Programming Puzzle 2 - Another Simple Loop
second puzzle
conditions
ask user for input longer than 10 characters if not inform and end
if ok then reverse the string without using builtin xbasic function.
while i am in no way proficient in xbaxsic, here is my attempt
Code:dim vInput_String as c ' dim xInput_string as n 'number place holder for length dim vReversed_string as c ' dim i as n 'counter variable dim vOriginal_string as c ' vInput_String=ui_get_text("Input String","Enter any string not less than 10 characters: ") xInput_string=len(vInput_string) if xInput_string < 11 'must meet the length criteria msgbox("Error", "You must enter 10 or more characters") end end if 'vReversed_string vReversed_string = "" for i = xInput_string to 1 step -1 ' count backwards vReversed_string=vReversed_string + (substr(vInput_string,i,1)) next msgbox("Reversed String", "Your character string reversed: " + vReversed_String) 'reversed vReversed_string - back to the original vOriginal_string = "" for i = xInput_string to 1 step -1 ' count backwards vOriginal_string = vOriginal_string + (substr(vReversed_String,i,1)) next msgbox("Original String", "Your reversed string reverted to original: " + vOriginal_String)
ps: formatting as per mr tom cone jr- thanksLast edited by GGandhi; 06-04-2011, 06:17 AM. Reason: edited to include additional code for reverting the reversed string
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Re: Programming Puzzle 2 - Another Simple Loop
Here is probably the easiest method that a user can learn....
Code:dim vchar_str as C vchar_str = "Tom Cone, Jr." dim vnum_char as N vnum_char = len(vchar_str)'gives us the total number of characters in the string if vnum_char < 11 'has to be more than 10 characters so anything under 11 is invalid msgbox("ERROR!!","Your character string must have more than 10 characters.") end end if dim vReversed as C vReversed="" 'always a good idea to make certain the variable starts out as nothing dim x as N x=0 ' x is used in the following substr function to decrement the total number of characters for i = 1 to vnum_char vReversed =vReversed + substr(vchar_str,vnum_char-x,1) x = x + 1 next msgbox("Reversal", "Your character string has been reversed to:" + crlf(2) + vReversed)
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