Showing what's behind the curtain

Common functions and helpful tools used to solve problems in Project Euler: A set of routines used to help solve math problems. Euler.py is included as needed. The example below shows typical Python usage: from Euler import is_prime, is_perm Here is the contents of Euler.py from math import sqrt, ceil import random import itertools fact […]

Missing Term in an Arithmetic Progression

Getting the ‘id’ index from the last INSERT in MySQL

Source code in PHP for calculating combination possibilities given the last number in a combination for Master combination locks.