Created
June 26, 2013 16:50
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Counting Sundays
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| require 'date' | |
| sundays = (1901..2000).reduce(0) do |memo, year| | |
| memo + (1..12).count do |month| | |
| Date.new(year, month, 1).sunday? | |
| end | |
| end | |
| puts sundays |
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