Last active
December 25, 2021 12:24
-
-
Save int3rlop3r/e9d4c58fe3474240e4b63513c0ec1e62 to your computer and use it in GitHub Desktop.
A poor man's random number generator
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import time | |
import hashlib | |
import sys | |
from queue import Queue | |
def get_seed(): | |
t = str(time.time()).encode() | |
h = hashlib.md5(t) | |
return int(h.hexdigest(), 16) | |
def bisect_rand(lower, upper): | |
nos = upper - lower | |
pos = get_seed() % nos | |
return lower + pos | |
def generate_lazy(limit): | |
q = Queue() | |
q.put((0, limit)) | |
while not q.empty(): | |
lower, upper = q.get() | |
num = lower | |
if lower != upper: | |
num = bisect_rand(lower, upper) | |
nextlower, nextupper = num+1, num-1 | |
if nextupper >= lower: | |
q.put((lower, nextupper)) | |
if nextlower <= upper: | |
q.put((nextlower, upper)) | |
yield num | |
q.task_done() | |
def generate(limit): | |
return list(generate_lazy(limit)) | |
if __name__ == '__main__': | |
try: | |
limit = int(sys.argv[1]) | |
except: | |
print(f"usage: python {sys.argv[0]} <limit>") | |
else: | |
for i in generate_lazy(limit): | |
print(f"{i}") |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment