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...
202. Happy Number【leetcode】java,hashSet,算法 202. Happy Number 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 repea...
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 equals 1 (where it will stay), or it loops endlessly in a cycle which does not include 1...
没有多大难度,都是利用Java写好的类。 publicclassSolution{publicbooleanisHappy(intn){intnewN=0;HashSet<Integer>set=newHashSet<Integer>();while(!set.contains(n)){set.add(n);newN=0;while(n!=0){newN+=(n%10)*(n%10);n/=10;}n=newN;if(n==1)returntrue;}returnfalse;}} 我后来看...
《Hello 算法》:动画图解、一键运行的数据结构与算法教程。支持 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 代码。简体版和繁体版同步更新,English version ongoing - hello-algo/mkdocs.yml at main · do-happy/hello-algo
leetcode/problems/src/heap/TopKFrequentWords.java/ Jump to 77 lines (68 sloc)2.52 KB RawBlame packageheap; importjava.util.*; /** * Created by gouthamvidyapradhan on 07/04/2018. * Given a non-empty list of words, return the k most frequent elements. ...
Happy Number 快乐数(Easy)(JAVA) 题目地址: https://leetcode.com/problems/happy-number/ 题目描述: Write an algorithm to determine if a number n is “happy”. A happy number is a number def...lintcode-easy-Number of Islands Given a boolean 2D matrix, find the number of islands. Given...
可以类似Linked List Cycle用快慢指针找到loop的出口, 若出来时walker 和 runner 都是1就是happy number. AC Java: 1classSolution {2publicbooleanisHappy(intn) {3if(n <= 0){4returnfalse;5}67intwalker =n;8intrunner =next(n);9while(walker !=runner){10walker =next(walker);11runner =next(nex...
LeetCode OJ:Happy Number(欢乐数) 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 ...
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