cesco wrote:
I created some more test strings and ran posters solutions against them.
results attached.
- Paddy.
# alternating_replacements.py
tests = " 1 2_ 3_4 5_6_ 7_8_9 10_11_12_ 13_14_15_16 17_18_19_20_" \
" _ _21 _22_ _23_24 _25_26_ _27_28_29 _30_31_32_ _33_34_35_36" \
" __ ___ ____ _____".split(" ")
def altrep0(s):
s1 = s.split("_")
s1 = [s1[i]+":"+s1[i+1] for i in range(0,len(s1),2)]
s1 = ",".join(s1)
return s1
altrep0.author="Frederik Lundh"
def altrep1(s):
from re import sub
def repl(o):
repl.n = not repl.n
return ":" if repl.n else ","
repl.n = False
return sub("_", repl, s)
altrep1.author="bearophile"
def altrep2(s):
evenOrOdd = True
s2 = ""
for i in s:
if i == '_':
if evenOrOdd:
s2 += ':'
evenOrOdd = not evenOrOdd
else:
s2 += ','
evenOrOdd = not evenOrOdd
else:
s2 += i
return s2
altrep2.author="cokofree"
def altrep3(s):
import re
from itertools import cycle
return re.sub("_", lambda m, c=cycle(":,").next: c(), s)
altrep3.author="Peter Otten"
def altrep4(s):
from itertools import islice, cycle
def interleave(*iterators):
iterators = [ iter(i) for i in iterators ]
while 1:
for i in iterators:
yield i.next()
def punctuate(s):
parts = s.split('_')
punctuation = islice(cycle(':,'), len(parts)-1)
return ''.join(interleave(parts, punctuation))
return punctuate(s)
altrep4.author="Duncan Booth"
def altrep5(s):
import re
return re.sub(r'([^_]+)_([^_]+)_?', r'\1:\2;', s)
altrep5.author="Pablo Ziliani"
progs = [ altrep0, altrep1, altrep2, altrep3, altrep4, altrep5]
def testall():
'''
>>> testall()
## Program by: Frederik Lundh
'' RETURNS '<type 'exceptions.IndexError'>'
'1' RETURNS '<type 'exceptions.IndexError'>'
'2_' RETURNS '2:'
'3_4' RETURNS '3:4'
'5_6_' RETURNS '<type 'exceptions.IndexError'>'
'7_8_9' RETURNS '<type 'exceptions.IndexError'>'
'10_11_12_' RETURNS '10:11,12:'
'13_14_15_16' RETURNS '13:14,15:16'
'17_18_19_20_' RETURNS '<type 'exceptions.IndexError'>'
'_' RETURNS ':'
'_21' RETURNS ':21'
'_22_' RETURNS '<type 'exceptions.IndexError'>'
'_23_24' RETURNS '<type 'exceptions.IndexError'>'
'_25_26_' RETURNS ':25,26:'
'_27_28_29' RETURNS ':27,28:29'
'_30_31_32_' RETURNS '<type 'exceptions.IndexError'>'
'_33_34_35_36' RETURNS '<type 'exceptions.IndexError'>'
'__' RETURNS '<type 'exceptions.IndexError'>'
'___' RETURNS ':,:'
'____' RETURNS '<type 'exceptions.IndexError'>'
'_____' RETURNS ':,:,:'
## Program by: bearophile
'' RETURNS ''
'1' RETURNS '1'
'2_' RETURNS '2:'
'3_4' RETURNS '3:4'
'5_6_' RETURNS '5:6,'
'7_8_9' RETURNS '7:8,9'
'10_11_12_' RETURNS '10:11,12:'
'13_14_15_16' RETURNS '13:14,15:16'
'17_18_19_20_' RETURNS '17:18,19:20,'
'_' RETURNS ':'
'_21' RETURNS ':21'
'_22_' RETURNS ':22,'
'_23_24' RETURNS ':23,24'
'_25_26_' RETURNS ':25,26:'
'_27_28_29' RETURNS ':27,28:29'
'_30_31_32_' RETURNS ':30,31:32,'
'_33_34_35_36' RETURNS ':33,34:35,36'
'__' RETURNS ':,'
'___' RETURNS ':,:'
'____' RETURNS ':,:,'
'_____' RETURNS ':,:,:'
## Program by: cokofree
'' RETURNS ''
'1' RETURNS '1'
'2_' RETURNS '2:'
'3_4' RETURNS '3:4'
'5_6_' RETURNS '5:6,'
'7_8_9' RETURNS '7:8,9'
'10_11_12_' RETURNS '10:11,12:'
'13_14_15_16' RETURNS '13:14,15:16'
'17_18_19_20_' RETURNS '17:18,19:20,'
'_' RETURNS ':'
'_21' RETURNS ':21'
'_22_' RETURNS ':22,'
'_23_24' RETURNS ':23,24'
'_25_26_' RETURNS ':25,26:'
'_27_28_29' RETURNS ':27,28:29'
'_30_31_32_' RETURNS ':30,31:32,'
'_33_34_35_36' RETURNS ':33,34:35,36'
'__' RETURNS ':,'
'___' RETURNS ':,:'
'____' RETURNS ':,:,'
'_____' RETURNS ':,:,:'
## Program by: Peter Otten
'' RETURNS ''
'1' RETURNS '1'
'2_' RETURNS '2:'
'3_4' RETURNS '3:4'
'5_6_' RETURNS '5:6,'
'7_8_9' RETURNS '7:8,9'
'10_11_12_' RETURNS '10:11,12:'
'13_14_15_16' RETURNS '13:14,15:16'
'17_18_19_20_' RETURNS '17:18,19:20,'
'_' RETURNS ':'
'_21' RETURNS ':21'
'_22_' RETURNS ':22,'
'_23_24' RETURNS ':23,24'
'_25_26_' RETURNS ':25,26:'
'_27_28_29' RETURNS ':27,28:29'
'_30_31_32_' RETURNS ':30,31:32,'
'_33_34_35_36' RETURNS ':33,34:35,36'
'__' RETURNS ':,'
'___' RETURNS ':,:'
'____' RETURNS ':,:,'
'_____' RETURNS ':,:,:'
## Program by: Duncan Booth
'' RETURNS ''
'1' RETURNS '1'
'2_' RETURNS '2:'
'3_4' RETURNS '3:4'
'5_6_' RETURNS '5:6,'
'7_8_9' RETURNS '7:8,9'
'10_11_12_' RETURNS '10:11,12:'
'13_14_15_16' RETURNS '13:14,15:16'
'17_18_19_20_' RETURNS '17:18,19:20,'
'_' RETURNS ':'
'_21' RETURNS ':21'
'_22_' RETURNS ':22,'
'_23_24' RETURNS ':23,24'
'_25_26_' RETURNS ':25,26:'
'_27_28_29' RETURNS ':27,28:29'
'_30_31_32_' RETURNS ':30,31:32,'
'_33_34_35_36' RETURNS ':33,34:35,36'
'__' RETURNS ':,'
'___' RETURNS ':,:'
'____' RETURNS ':,:,'
'_____' RETURNS ':,:,:'
## Program by: Pablo Ziliani
'' RETURNS ''
'1' RETURNS '1'
'2_' RETURNS '2_'
'3_4' RETURNS '3:4;'
'5_6_' RETURNS '5:6;'
'7_8_9' RETURNS '7:8;9'
'10_11_12_' RETURNS '10:11;12_'
'13_14_15_16' RETURNS '13:14;15:16;'
'17_18_19_20_' RETURNS '17:18;19:20;'
'_' RETURNS '_'
'_21' RETURNS '_21'
'_22_' RETURNS '_22_'
'_23_24' RETURNS '_23:24;'
'_25_26_' RETURNS '_25:26;'
'_27_28_29' RETURNS '_27:28;29'
'_30_31_32_' RETURNS '_30:31;32_'
'_33_34_35_36' RETURNS '_33:34;35:36;'
'__' RETURNS '__'
'___' RETURNS '___'
'____' RETURNS '____'
'_____' RETURNS '_____'
>>>
'''
import sys
for prog in progs:
print "\n## Program by:", prog.author
for test in tests:
try:
answer = prog(test)
except:
answer = sys.exc_info()[0]
print "%14s RETURNS '%s'" % ("'%s'" % (test,), answer)
if __name__ == "__main__":
testall()
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