完美数(Perfect number),又称完全数或完备数,指的是一个正整数,它所有的真因子(即除了自身以外的约数)之和,恰好等于它本身。 例如:6,除了自身之外的约数是1、2、3。 6=1+2+3 6是一个完美数。 方法1:使用for循环中查找完美数 第1步:用变量n来存储用户输入的数字。 第2步:变量sum来存储约数之和。 第...
deffind_perfect_numbers(limit):perfect_numbers=[]fornuminrange(2,limit):factors=[iforiinrange(1,num)ifnum%i==0]ifsum(factors)==num:perfect_numbers.append(num)returnperfect_numbers limit=10000perfect_numbers=find_perfect_numbers(limit)fornumberinperfect_numbers:print(number) 1. 2. 3. 4. 5...
First,‘What is the perfect number?’A perfect number is equal to the sum of its divisors. For example, take number 6.Which numbers can divide it completely?The numbers are1,2, and3, calleddivisors. So, according to the definition, a perfect number is equal to the sum of its divisor;...
完美数完美数(perfect number,又称完全数)指,它所有的真因子(即除了自身以外的因子)和,恰好等于它自身。第一个完美数:6,第二个完美数:28,第三个完美数:496,第四个完美数:8128,第五个完美数:33550336,...2 探索在茫茫数海中,第五个完美数(33550336)要大得多,居然藏在千万位数的深处!它在十五世纪被人们...
/usr/bin/env python# -*- coding: UTF-8 -*-classSolution(object):defcheckPerfectNumber(self,num):""" :type num: int :rtype: bool """sum=0foriinxrange(1,num):if(num%i==0):sum+=iif(sum==num):returnTrueelse:returnFalsedefcheckPerfectNumber2(self,num):total,i=1,2whilei*i<num...
The following code implements the Simple iteration method to check whether a given number is a perfect number. 1 2 3 4 5 6 7 8 9 defperfectornot(x): s=0 foriinrange(1,x): ifx%i==0: s=s+i returns==x print(perfectornot(28)) ...
This Blog provides a comprehensive guide to creating prime numbers, perfect numbers, and reverse numbers in Python. Learn More about Python Numbers!
这是一道leetcode题(No.507),我前段时间写过一个解,在leetcode平台上已通过: 代码语言:javascript 复制 classSolution:defcheckPerfectNumber(self,num:int)->bool:sum=1tmp=numifnum==0or num==1:returnFalsewhilenum%2==0:num/=2sum+=num+tmp/numreturnsum==tmp ...
This method involves iterating through numbers less than 20 and using a helper function to check if each number is prime. Example: Here is the complete Python code and an example. def is_prime(num): if num <= 1: return False for i in range(2, int(num**0.5) + 1): ...
LeetCode 0279. Perfect Squares完全平方数【Medium】【Python】【BFS】 Problem LeetCode Given a positive integern, find the least number of perfect square numbers (for example,1, 4, 9, 16, ...) which sum ton. Example 1: Input: n = 12Output: 3Explanation: 12 = 4 + 4 + 4. ...