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python Programming Glossary: isprimeInterpreting a benchmark in C, Clojure, Python, Ruby, Scala and others [closed] http://stackoverflow.com/questions/11641098/interpreting-a-benchmark-in-c-clojure-python-ruby-scala-and-others 10 1000 b Time.now puts # b a 1000 mils Scala def isPrime n Int 2 until n forall n _ 0 def sexyPrimes n Int 11 to n map.. sexyPrimes n Int 11 to n map i List i 6 i filter _ forall isPrime _ val a System.currentTimeMillis println sexyPrimes 100 1000.. println b a .toString mils Scala opimized isPrime the same idea like in Clojure optimization import scala.annotation.tailrec..
To find first N prime numbers in python http://stackoverflow.com/questions/1628949/to-find-first-n-prime-numbers-in-python using a regexp # usr bin python import re sys def isPrime n # see http www.noulakaz.net weblog 2007 03 18 a regular expression.. search space l list # result list while len l N l filter isPrime range M 100 M # append prime element of M 100 M to l M 100 ..
Python issues with return statement http://stackoverflow.com/questions/17173822/python-issues-with-return-statement and can't seem to get it to work. import math def main if isPrime 2 7 print Yes else print No def isPrime i n if n i 0 and i math.sqrt.. math def main if isPrime 2 7 print Yes else print No def isPrime i n if n i 0 and i math.sqrt n return False if i math.sqrt n.. False if i math.sqrt n print is Prime n return True else isPrime i 1 n main Now the output for the isPrime method is as follows..
Python recursive function error: “maximum recursion depth exceeded” http://stackoverflow.com/questions/2401447/python-recursive-function-error-maximum-recursion-depth-exceeded the following code which works through brute force def isPrime n for x in range 2 int n 0.5 1 if n x 0 return False return.. return True def primeList n primes for i in range 2 n if isPrime i primes.append i return primes def sumPrimes primelist prime_sum.. primeList 2000000 The three functions work as follows isPrime checks whether a number is a prime primeList returns a list..
Twisted: Making code non-blocking http://stackoverflow.com/questions/6117587/twisted-making-code-non-blocking in the normal course of things your code runs sequentially isPrime cannot execute a second time until after it has finished executing..
Interpreting a benchmark in C, Clojure, Python, Ruby, Scala and others [closed] http://stackoverflow.com/questions/11641098/interpreting-a-benchmark-in-c-clojure-python-ruby-scala-and-others to imagine how much time will it take Code listings C int isprime int x int i for i 2 i x i if x i 0 return 0 return 1 void findprimes.. 0 return 1 void findprimes int m int i for i 11 i m i if isprime i isprime i 6 printf d d n i 6 i main findprimes 10 1000 Ruby.. 1 void findprimes int m int i for i 11 i m i if isprime i isprime i 6 printf d d n i 6 i main findprimes 10 1000 Ruby def is_prime..
Sieve of Eratosthenes - Finding Primes Python http://stackoverflow.com/questions/3939660/sieve-of-eratosthenes-finding-primes-python limit # Initialize the primality list a 0 a 1 False for i isprime in enumerate a if isprime yield i for n in xrange i i limit.. list a 0 a 1 False for i isprime in enumerate a if isprime yield i for n in xrange i i limit i # Mark factors non prime..
Fast prime/factorization module http://stackoverflow.com/questions/4643647/fast-prime-factorization-module set primesbelow 100000 _smallprimeset 100000 def isprime n precision 7 # http en.wikipedia.org wiki Miller Rabin_primality_test#Algorithm_and_running_time.. if checker limit break if n 2 return factors while n 1 if isprime n factors.append n break factor pollard_brent n # trial division..
Simple Prime Generator in Python http://stackoverflow.com/questions/567222/simple-prime-generator-in-python out only primes import math def main count 3 while True isprime True for x in range 2 int math.sqrt count 1 if count x 0 isprime.. True for x in range 2 int math.sqrt count 1 if count x 0 isprime False break if isprime print count count 1 For much more efficient.. math.sqrt count 1 if count x 0 isprime False break if isprime print count count 1 For much more efficient prime generation..
Float Bug on Square Root Function Python http://stackoverflow.com/questions/9486618/float-bug-on-square-root-function-python I have the code # usr bin env python import math i 2 isprime True n input Enter a number while i math.sqrt n i 1 if n i 0.. n input Enter a number while i math.sqrt n i 1 if n i 0 isprime False if isprime False print Not Prime else print It's Prime.. a number while i math.sqrt n i 1 if n i 0 isprime False if isprime False print Not Prime else print It's Prime And everything works..
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