1、Python因式分解代码:
import time # 对一个数进行因式分解 def factorization(num): factor = [] while num > 1: for i in range(num - 1): k = i + 2 if num % k == 0: factor.append(k) num = int(num / k) break return factor st = time.perf_counter() print(factorization(707829217)) et = time.perf_counter() print("用时:", et - st)
2、因式分解思路:
假定要分解的整数为m
1、首先用while循环判断m是否大于1;
2、如果m>1再用for循环找到m的最小因数n,
用append()把最小因数添加到factor数组中;
3、把m/n赋给m,继续执行第二步;
4、直到m不大于1,返回数组factor。