Created
January 18, 2015 12:37
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data=[ | |
# [ id, input, expected ], | |
[ -1, "4", "4" ], | |
[ 0, "4*5+6&7|8", "44" ], | |
[ 1, "15*5", "75" ], | |
[ 2, "15+5", "20" ], | |
[ 3, "15&5", "5" ], | |
[ 4, "15|5", "15" ], | |
[ 5, "30*15*5", "2250" ], | |
[ 6, "30*15+5", "600" ], | |
[ 7, "30*15&5", "150" ], | |
[ 8, "30*15|5", "450" ], | |
[ 9, "30+15*5", "225" ], | |
[ 10, "30+15+5", "50" ], | |
[ 11, "30+15&5", "35" ], | |
[ 12, "30+15|5", "45" ], | |
[ 13, "30&15*5", "70" ], | |
[ 14, "30&15+5", "19" ], | |
[ 15, "30&15&5", "4" ], | |
[ 16, "30&15|5", "14" ], | |
[ 17, "30|15*5", "155" ], | |
[ 18, "30|15+5", "36" ], | |
[ 19, "30|15&5", "5" ], | |
[ 20, "30|15|5", "31" ], | |
[ 21, "1+2+3+4+5+6+7+8+9+10", "55" ], | |
[ 22, "1*2*3*4*5*6*7*8*9*10", "3628800" ], | |
[ 23, "1+2+3+4+5*6+7+8+9+10", "600" ], | |
[ 24, "1*2*3*4*5+6*7*8*9*10", "1330560" ], | |
[ 25, "1|2|4|8|16|32|64|128|256|512", "1023" ], | |
[ 26, "2046&2045&2043&2039&2031&2015&1983&1919&1791&1535", "1024" ], | |
[ 27, "0+1|7*6", "42" ], | |
[ 28, "6|4+2&9+4", "10" ], | |
[ 29, "0&6+1&6|4*2", "0" ], | |
[ 30, "4|4*7+7+4&9", "56" ], | |
[ 31, "9&8*2+3*1|2|7", "280" ], | |
[ 32, "230+83*751&176", "50080" ], | |
[ 33, "89+62465*94&84", "5254536" ], | |
[ 34, "668&925+398*562", "599092" ], | |
[ 35, "15|9+348*302&23&77", "1452" ], | |
[ 36, "3&3&6|7+3|5*3|2&4*4", "0" ], | |
[ 37, "7*6|7|7*1&7|7&3&8*3", "0" ], | |
[ 38, "896+316*209*264&728", "2026464" ], | |
[ 39, "1844+41*64|7906|66842", "138965970" ], | |
[ 40, "2&41&6884*69857+68083", "0" ], | |
[ 41, "2+3*9*3|6|7&0+3+3*6&8", "0" ], | |
[ 42, "895+400*988|549&237+488", "938875" ], | |
[ 43, "30*48&99036+140&33+75|645", "22050" ], | |
[ 44, "278+2033+53*96*56|3303|3&14", "3177216" ], | |
[ 45, "5380&27|643*2+1888&74+30|16", "0" ], | |
[ 46, "0&3845+6645*4293+78&78*3102|9|3", "90127550385" ], | |
[ 47, "78&44956&67*974|413+13237*5588|54*668", "0" ], | |
[ 48, "500*206+145|167|163|465&668+662+806*681&458", "123896000" ], | |
[ 49, "82+14&0*344+34+542916&18*11|844|64*873223|840993", "23813260003764" ], | |
[ 50, "374958|6727+53965&53*954&29|6*138572+59|547783&43*8998", "12178274756590800" ], | |
] | |
require 'benchmark' | |
Benchmark.bmbm do |x| | |
data *= 100 | |
x.report("while-sub") do | |
ops = %w(| & + *) | |
data.each do |i, eq, expected| | |
result = eq.dup | |
ops.each do |op| | |
r = /(\d+)#{Regexp.quote(op)}(\d+)/ | |
true while result.sub!(r) do | |
$1.to_i.send(op, $2.to_i) | |
end | |
end | |
raise "expected #{expected} for #{eq}, got #{result}" unless result.to_s == expected | |
end | |
end | |
x.report("while-sub'") do | |
ops = %w(| & + *) | |
rs = ops.inject({}) {|h, op| h[op] = /(\d+)#{Regexp.quote(op)}(\d+)/; h } | |
data.each do |i, eq, expected| | |
result = eq.dup | |
ops.each do |op| | |
true while result.sub!(rs[op]) do | |
$1.to_i.send(op, $2.to_i) | |
end | |
end | |
raise "expected #{expected} for #{eq}, got #{result}" unless result.to_s == expected | |
end | |
end | |
x.report("gsub-eval") do | |
ops = %w(| & + *) | |
data.each do |i, eq, expected| | |
result = eq.dup | |
ops.each do |op| | |
result.gsub!(/\d+(?:#{Regexp.quote(op)}\d+)+/) { eval $& } | |
end | |
raise "expected #{expected} for #{eq}, got #{result}" unless result.to_s == expected | |
end | |
end | |
x.report("gsub-eval'") do | |
ops = %w(| & + *) | |
rs = ops.inject({}) {|h, op| h[op] = /\d+(?:#{Regexp.quote(op)}\d+)+/; h } | |
data.each do |i, eq, expected| | |
result = eq.dup | |
ops.each do |op| | |
result.gsub!(rs[op]) { eval $& } | |
end | |
raise "expected #{expected} for #{eq}, got #{result}" unless result.to_s == expected | |
end | |
end | |
x.report("gsub-reduce") do | |
ops = %w(| & + *) | |
data.each do |i, eq, expected| | |
result = eq.dup | |
ops.each do |op| | |
result.gsub!(/\d+(?:#{Regexp.quote(op)}\d+)+/) { $&.scan(/\d+/).map(&:to_i).reduce(op) } | |
end | |
raise "expected #{expected} for #{eq}, got #{result}" unless result.to_s == expected | |
end | |
end | |
x.report("gsub-reduce'") do | |
ops = %w(| & + *) | |
rs = ops.inject({}) {|h, op| h[op] = /\d+(?:#{Regexp.quote(op)}\d+)+/; h } | |
data.each do |i, eq, expected| | |
result = eq.dup | |
ops.each do |op| | |
result.gsub!(rs[op]) { $&.scan(/\d+/).map(&:to_i).reduce(op) } | |
end | |
raise "expected #{expected} for #{eq}, got #{result}" unless result.to_s == expected | |
end | |
end | |
x.report("gsub-reduce''") do | |
ops = %w(| & + *) | |
rs = ops.inject({}) {|h, op| h[op] = /\d+(?:#{Regexp.quote(op)}\d+)+/; h } | |
data.each do |i, eq, expected| | |
result = eq.dup | |
ops.each do |op| | |
result.gsub!(rs[op]) { $&.scan(/\d+/o).map(&:to_i).reduce(op) } | |
end | |
raise "expected #{expected} for #{eq}, got #{result}" unless result.to_s == expected | |
end | |
end | |
x.report("scan-while") do | |
ops = %w(| & + *) | |
data.each do |i, eq, expected| | |
result, = eq.scan(/\d+|[#{ops.map(&Regexp.method(:quote)).join}]/).each_slice(2).inject([]) do |stack, (n, op)| | |
n = n.to_i | |
while stack.size > 1 && (op.nil? || ops.index(stack.last) < ops.index(op)) | |
n = n.send(stack.pop, stack.pop) | |
end | |
stack << n | |
stack << op | |
end | |
raise "expected #{expected} for #{eq}, got #{result}" unless result.to_s == expected | |
end | |
end | |
x.report("scan-while'") do | |
ops = %w(| & + *) | |
data.each do |i, eq, expected| | |
result, = eq.scan(/\d+|[#{ops.map(&Regexp.method(:quote)).join}]/o).each_slice(2).inject([]) do |stack, (n, op)| | |
n = n.to_i | |
while stack.size > 1 && (op.nil? || ops.index(stack.last) < ops.index(op)) | |
n = n.send(stack.pop, stack.pop) | |
end | |
stack << n | |
stack << op | |
end | |
raise "expected #{expected} for #{eq}, got #{result}" unless result.to_s == expected | |
end | |
end | |
x.report("scan-while''") do | |
ops = %w(| & + *) | |
data.each do |i, eq, expected| | |
result, = eq.scan(/\d+|[#{ops.map(&Regexp.method(:quote)).join}]/o).each_slice(2).inject([]) do |stack, (n, op)| | |
n = n.to_i | |
while stack.size > 1 && (op.nil? || ops.index(stack.last) < ops.index(op)) | |
case stack.pop | |
when '*' | |
n *= stack.pop | |
when '+' | |
n += stack.pop | |
when '&' | |
n &= stack.pop | |
when '|' | |
n |= stack.pop | |
end | |
end | |
stack << n | |
stack << op | |
end | |
raise "expected #{expected} for #{eq}, got #{result}" unless result.to_s == expected | |
end | |
end | |
end |
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