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Results tagged with math
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user 18957
The challenge involves mathematics in some central way. Also consider using more specific tags, listed in the tag wiki info.
3
votes
Fastest count of certain hypercubes with labeled vertices
Python + python-sat (about 1 second on my machine)
import itertools
from pysat.solvers import Glucose4
def count_cubes(n):
clauses = []
for (x, y, z) in itertools.combinations(range(1 << n), …
- 3,864
2
votes
f(g(x)) decreases while g(f(x)) increases
Pyth, 34 Bytes
This is just a direct translation of my Python answer.
*-1*2%Q2+*2*QQ<Q0
*-1*2%Q2+*2*QQ>Q0
- 3,864
1
vote
20
votes
f(g(x)) decreases while g(f(x)) increases
Python, 68 characters
f=lambda x:(1-x%2*2)*(2*x*x+(x<0))
g=lambda x:(1-x%2*2)*(2*x*x+(x>0))
f maps negative numbers to odd numbers and positive numbers to even numbers, and even numbers to positive n …
- 3,864