链接地址:https://leetcode.com/problems/happy-number/ 2 解决方案 java代码如下: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 public class Solution { public boolean isHappy(int n) { int result = 0; ArrayList<Integer...
classSolution:defisHappy(self, n: int) ->bool: memo=set()whilennotinmemo: memo.add(n) n= sum(int(i)**2foriinstr(n))return1inmemo Runtime:24 ms, faster than98.44% of Python3 online submissions for Happy Number. Memory Usage:13.9 MB, less than33.89% of Python3 online submissions ...
replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1 (where it will stay), or it loops endlessly in a cycle which does not include 1. Those numbers for which this process ends in 1 are happy numbers. ...
Those numbers for which this process ends in 1 are happy numbers. Example: 19 is a happy number 12 + 92 = 82 82 + 22 = 68 62 + 82 = 100 12 + 02 + 02 = 1 直接模拟。 class Solution { public: bool isHappy(int n) { if (n == 1) return true; int m ; map<int,int>a;...
LeetCode之Happy Number 1、题目 Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process until the number ...
Happy Number python3 1 class Solution(object): 2 def isHappy(self, n): 3 """ 4 :type n: int 5 :rtype: bool 6 """ 7 sett=set([n]) 8 while n>1: 9 n=sum([int(x)**2 for x in str(n)]) 10 if n in sett: return False ...
每天来一道,面试不卡壳,今天是天天算法陪你成长的第15天。PS:今天发的太晚了,抱歉～ 本题可在LeetCode上OJ,链接 Happy Number, 感谢 @牧码人小鹏 题目描述:Write an algorithm to determine if a number is…
class Solution: def isHappy(self, n: int) -> bool: # used 维护已出现的数字集合 used: Set[int] = set() #当 n 未出现过时,继续计算下一个数 while n not in used: # 标记 n 已出现过 used.add(n) # 计算下一个数,即求 n 的每一位的平方和 nxt: int = 0 #当 n 不为 0 时,则...
Leetcode - Happy Number 最近已经开始紧张的期末复习了,但是看到大家都在进行编程训练,为今年九月找工作做准备,我的心不能定。因为我知道,英国的成绩对我无意义,但是编程能力是我以后吃饭的家伙,我绝对不能落下。 之前一直在上普林斯顿的算法课。最后三周的课,每次上耗时太长,实在抽不出时间,而且自己已经明显过...
two sumLeetCode #1. two sum 1.1. solution 1.2 Screenshot 2.0.LeetCode#202.HappyNumber2.1...://www.youtube.com/watch?v=y_xnyjs9gcc “WhatisaHashTable Data Structure - IntroductiontoHash Tables , Part 智能推荐 算法:Floyd判圈算法 文章...