_id
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5
title
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3 values
text
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6.97k
language
stringclasses
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meta_information
dict
q1330
Increment a numerical string
valid
next = str(int('123') + 1)
Python
{ "resource": "" }
q1331
Strip a set of characters from a string
valid
>>> def stripchars(s, chars): ... return s.translate(None, chars) ... >>> stripchars("She was a soul stripper. She took my heart!", "aei") 'Sh ws soul strppr. Sh took my hrt!'
Python
{ "resource": "" }
q1332
Sorting algorithms_Permutation sort
valid
from itertools import permutations in_order = lambda s: all(x <= s[i+1] for i,x in enumerate(s[:-1])) perm_sort = lambda s: (p for p in permutations(s) if in_order(p)).next()
Python
{ "resource": "" }
q1333
Averages_Arithmetic mean
valid
from math import fsum def average(x): return fsum(x)/float(len(x)) if x else 0 print (average([0,0,3,1,4,1,5,9,0,0])) print (average([1e20,-1e-20,3,1,4,1,5,9,-1e20,1e-20]))
Python
{ "resource": "" }
q1334
Abbreviations, simple
valid
command_table_text = user_words = "riG rePEAT copies put mo rest types fup. 6 poweRin" def find_abbreviations_length(command_table_text): command_table = dict() input_iter = iter(command_table_text.split()) word = None try: while True: if word is None: word = next(input_iter) abbr_len = next(input_iter, len(word)) try: command_table[word] = int(abbr_len) word = None except ValueError: command_table[word] = len(word) word = abbr_len except StopIteration: pass return command_table def find_abbreviations(command_table): abbreviations = dict() for command, min_abbr_len in command_table.items(): for l in range(min_abbr_len, len(command)+1): abbr = command[:l].lower() abbreviations[abbr] = command.upper() return abbreviations def parse_user_string(user_string, abbreviations): user_words = [word.lower() for word in user_string.split()] commands = [abbreviations.get(user_word, "*error*") for user_word in user_words] return " ".join(commands) command_table = find_abbreviations_length(command_table_text) abbreviations_table = find_abbreviations(command_table) full_words = parse_user_string(user_words, abbreviations_table) print("user words:", user_words) print("full words:", full_words)
Python
{ "resource": "" }
q1335
Entropy
valid
from __future__ import division import math def hist(source): hist = {}; l = 0; for e in source: l += 1 if e not in hist: hist[e] = 0 hist[e] += 1 return (l,hist) def entropy(hist,l): elist = [] for v in hist.values(): c = v / l elist.append(-c * math.log(c ,2)) return sum(elist) def printHist(h): flip = lambda (k,v) : (v,k) h = sorted(h.iteritems(), key = flip) print 'Sym\thi\tfi\tInf' for (k,v) in h: print '%s\t%f\t%f\t%f'%(k,v,v/l,-math.log(v/l, 2)) source = "1223334444" (l,h) = hist(source); print '.[Results].' print 'Length',l print 'Entropy:', entropy(h, l) printHist(h)
Python
{ "resource": "" }
q1336
Tokenize a string with escaping
valid
def token_with_escape(a, escape = '^', separator = '|'): result = [] token = '' state = 0 for c in a: if state == 0: if c == escape: state = 1 elif c == separator: result.append(token) token = '' else: token += c elif state == 1: token += c state = 0 result.append(token) return result
Python
{ "resource": "" }
q1337
Hello world_Text
valid
print "Hello world!"
Python
{ "resource": "" }