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Nairaland Forum / Science/Technology / Programming / Help Me Keep My Brain In My Skull! Solve This Logic! (1994 Views)
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Help Me Keep My Brain In My Skull! Solve This Logic! by uvalued(m): 5:26pm On Mar 27, 2016 |
Happy easter to you all. I have beeen racking my brain for hours to solve this logic in php but with no succes in site and tried googling it was not clear. Here it goes. I have this serial values 1,2,3,4,5,6,7,8,9,10 as id in my database. Using SELECT statement to call the values was ok. But here is my problem, I want 1 to be added to 1 from the database, 1 subtracted from 2 from the database, 1 added to 3 from the database, 1 subtracted from 4 from the database etc. Each operation should be added to an array which will be called later using for loop. I thought of using array, if then else, i just cant rap my fingers around it, can someone help |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by Nobody: 5:39pm On Mar 27, 2016 |
You rack your brain not crack...... Continue with it... You'll finally get it.... Some of your forefathers in whatever you're doing did not give up.... Me I don't understand what is there .. 4 Likes |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by codemarshal08(m): 5:56pm On Mar 27, 2016 |
uvalued: Can you post the codes you have tried here ? |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by codemaniacs: 6:05pm On Mar 27, 2016 |
Go to phpmyadmin then edit your ID table to enable "auto increment" and click the check box and make the index "primary". No need to code it |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by codemarshal08(m): 6:07pm On Mar 27, 2016 |
codemaniacs:This obviously wont take care of the subtraction case. |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by uvalued(m): 6:07pm On Mar 27, 2016 |
codemarshal08: $QuerySelects = "SELECT * FROM entry"; $array = array(); $Query = mysql_query($QuerySelects) or die (mysql_errno() . ": " . mysql_error(). "\n" while($result=mysql_fetch_assoc($Query)) { $k = $k +1; $array[] = $result["id"]; $i = $i +1; if($i == 2) { print_r($array); } } |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by uvalued(m): 6:09pm On Mar 27, 2016 |
codemaniacs: It already auto_incremented ie the ID |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by uvalued(m): 6:11pm On Mar 27, 2016 |
airmirthd1: Thanks at least your comment was a relief by putting a smile on me sha |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by codemarshal08(m): 6:14pm On Mar 27, 2016 |
uvalued: Check the below tip: -------------------------- From the problem statement, i could recognize a pattern values ==> 1,2,3,4,5,6,7,8,9,10 even numbers ==> 2, 4, 6, 8, 10 odd numbers ==> 1, 3, 5, 7, 9 //make a function to determine if a number is even or odd // then make the below comparison if the value i received from DB is an even number add 1 to it else subtract 1 from it 1 Like |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by uvalued(m): 6:36pm On Mar 27, 2016 |
codemarshal08: Yes you are right, l will add that to my codes. By the way, someone suggested this code and it worked and tot i share it here for others to benefit. $val + (($val & 1)<<1) -1 adds 1 to odd numbers and substracts 1 from even numbers.https://stackoverflow.com/users/3741589/quasimodos-clone |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by bigdrey(m): 12:53am On Mar 29, 2016 |
I don't really get u very well, but with the little i got, here's is aw u can go abt it: If($k % 2 != 0){ $newK = $k +1: }else{ $newK = $k -1; } You shld get the concept and if that doesn't solve all you need, try clarifying ursef more. 2 Likes |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by paranorman(m): 5:31pm On Mar 29, 2016 |
Oga codemarshall08, how do one check if a number is odd or even or multiple of a particular number or if a number is a factor or so? |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by codemarshal08(m): 8:59pm On Mar 29, 2016 |
paranorman: Are you requesting logic or codes ? |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by paranorman(m): 9:56pm On Mar 29, 2016 |
codemarshal08:both, if possible. do it in PHP |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by mexzony: 12:30am On Mar 30, 2016 |
Are u a beginning programmer.if so why don't you try to solve it all on ur own even if it takes you a bit of time. This is because it eventually helps you to develop ability to come up with solutions from scratch and you become smarter in the long run. Just my opinion though. |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by omicpet(m): 12:15am On Apr 01, 2016 |
Very well here's a rough idea , Do a for loop where if value of array mod 2== 0 subtract 1 And another where array mod 2 == 1 plus 1.. Try get d idea .. |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by mexzony: 8:02am On Apr 01, 2016 |
omicpet:Hello is this omic from BCC. |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by omicpet(m): 5:02pm On Apr 01, 2016 |
mexzony: Yeah BCC & BCPS |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by mexzony: 5:09pm On Apr 01, 2016 |
omicpet:Guy how far na.the Boi who refused to deliver my periscope to me. If you know my identity no reveal am o. Science class mates. |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by omicpet(m): 5:15pm On Apr 01, 2016 |
mexzony: Lol oh damn . how ya |
Re: Help Me Keep My Brain In My Skull! Solve This Logic! by mexzony: 5:24pm On Apr 01, 2016 |
omicpet:Dude send me ur contact at mexzony@gmail.com |
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