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Formatting a table of data
Strings and Regular Expressions example from a Well House Consultants training course
More on Strings and Regular Expressions [link]

This example is described in the following article(s):
   • Ruby to access web services - [link]
   • Divide 10000 by 17. Do you get 588.235294117647, 588.24 or 588? - Ruby and PHP - [link]

Source code: kiddos Module: R109


Exercise - you have 23 grandchildren, but not all of them
will be in favour at Christmas. You are going to share
1000 pounds between the favoured children ... draw up a table
showing how much each will get depending on the number in favour


grandchildren = 23
names = %w(Archibald-Magna William Betty Arthur Jenny David
                Graham Lisa Sharon)

gift = 1000.00

currentname = 0
(1..grandchildren).each do |nif|
        currentname = (currentname + 1) % names.length
        howm = gift / nif
        print "With %-2d in favour (add %10.10s) each gets %06.2f\n" %
                [nif, names[currentname],howm]


Sample output

Dorothy:rn grahamellis$ ruby kiddos
With 1 in favour (add William) each gets 1000.00
With 2 in favour (add Betty) each gets 500.00
With 3 in favour (add Arthur) each gets 333.33
With 4 in favour (add Jenny) each gets 250.00
With 5 in favour (add David) each gets 200.00
With 6 in favour (add Graham) each gets 166.67
With 7 in favour (add Lisa) each gets 142.86
With 8 in favour (add Sharon) each gets 125.00
With 9 in favour (add Archibald-) each gets 111.11
With 10 in favour (add William) each gets 100.00
With 11 in favour (add Betty) each gets 090.91
With 12 in favour (add Arthur) each gets 083.33
With 13 in favour (add Jenny) each gets 076.92
With 14 in favour (add David) each gets 071.43
With 15 in favour (add Graham) each gets 066.67
With 16 in favour (add Lisa) each gets 062.50
With 17 in favour (add Sharon) each gets 058.82
With 18 in favour (add Archibald-) each gets 055.56
With 19 in favour (add William) each gets 052.63
With 20 in favour (add Betty) each gets 050.00
With 21 in favour (add Arthur) each gets 047.62
With 22 in favour (add Jenny) each gets 045.45
With 23 in favour (add David) each gets 043.48
Dorothy:rn grahamellis$

Learn about this subject
This module and example are covered on the following public courses:
 * Learning to program in Ruby
 * Ruby Programming
Also available on on site courses for larger groups

Books covering this topic
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Other Examples
This example comes from our "Strings and Regular Expressions" training module. You'll find a description of the topic and some other closely related examples on the "Strings and Regular Expressions" module index page.

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