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Array Programming Help Sought

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  1. TheMiltMan TheMiltMan is offline

    Vancouver
    Canada

    Posts: 121
    Joined: Jul 07

    Mar 21st, 2011 (3/21/2011 7:48am)

    Hi,

    I'm looking for help coming up with an array multiplication program that will:

    1. allow the user to define the size of the array (number of rows and columns)
    2. multiply the elements such that only one element from each row is multiplied w/only one element in each of the other rows (ex. a 2x2 array gives output for a1*b1 and a1 * b2 and a2 * b1 and a2 * b2)
    3. allow the user to define upper and lower bounds for the above product
    4. output combinations that fall within these bounds.

    If there are any programmers out there that would be interested in helping me please pm. I am somewhat familiar w/visual basic (wrote 1000's of lines of code in the distant past) so that might be a plus in terms of conversing.

    Thanks,

    Niels
     1
  2. p00pymcp00perton p00pymcp00perton is offline

    Lao People's Democratic Republic

    Posts: 12,310
    Joined: Jun 08

    Mar 21st, 2011 (3/21/2011 7:50am) in reply to TheMiltMan

  3. Seykota Seykota is offline

    TX
    United States

    Posts: 8,385
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    Mar 21st, 2011 (3/21/2011 8:49am) in reply to p00pymcp00perton

    it sounds like you need a multiplication array with a conditional if statement. my assumption is you are using excel since you mentioned vba?
  4. BadAllergies BadAllergies is offline

    IL
    United States

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    Mar 21st, 2011 (3/21/2011 9:36am) in reply to Seykota

  5. Basics Basics is offline

    Western Sahara

    Posts: 2,973
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    Mar 21st, 2011 (3/21/2011 1:21pm) in reply to BadAllergies

    it's been years aince I used VB but this is a simple problem. Off the top of my head you initiate the 2 arrays dynamically after the user enters the size ( = new in java). Then just use 2 for loops to multiply the elements. Store the bounds in global variables and use if statements to check if the products are within range.


    devshed forums > OT for programming advice btw
  6. TC_Clueless TC_Clueless is offline

    Columbia, MO
    United States

    Posts: 945
    Joined: Jan 07

    Mar 21st, 2011 (3/21/2011 5:54pm) in reply to Basics

    Pretty poor style and you'd never really do it like this and bother storing in the arrays to begin with in the real world, but something like this I guess https://gist.github.com/879767

    I made some assumptions but you should be able to modify to suit:

    array dimensions are square
    numbers are integers
    lower and upper bounds are exclusive
     
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