Created
April 29, 2011 19:31
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Performance testing really stupid integer counting in Ruby
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require 'time' | |
ITERATIONS = 1000000 | |
rows = [[5,25,2005,1,0,143,2]] | |
def max_ugly(rows) | |
max = 1 | |
divvy = 10 | |
rows.each do |row| | |
while true do | |
if row[1].to_i / divvy > 0 | |
max = max + 1 | |
divvy = divvy * 10 | |
else | |
break | |
end | |
end | |
end | |
max | |
end | |
def max_elegant(rows) | |
rows.collect { |row| row[1].to_s }.map(&:length).max | |
end | |
s = Time.now | |
1.upto(ITERATIONS) { | |
max_ugly(rows) | |
} | |
e = Time.now | |
ugly_time = e - s | |
s = Time.now | |
1.upto(ITERATIONS) { | |
max_elegant(rows) | |
} | |
e = Time.now | |
elegant_time = e - s | |
puts "Ugly: #{ugly_time.to_f} seconds" | |
puts "Elegant: #{elegant_time.to_f} seconds" |
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