397. Integer Replacement QuestionEditorial Solution My Submissions   Total Accepted: 5878 Total Submissions: 21519 Difficulty: Easy Given a positive integer n and you can do operations as follow: If n is even, replace n with n/2. If n is odd, you can…

Week3 - 397. Integer Replacement 397.Integer Replacement - Medium Given a positive integer n and you can do operations as follow: 1.If n is even, replace n with n/2. 2.If n is odd, you can replace n with either n + 1 or n - 1. What is the minimum num…

[LeetCode]397. Integer Replacement 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/integer-replacement/description/ 题目描述: Given a positive integer n and you can do operations as follow: If n is even, replace n with n/2. If n is odd, you…

Given a positive integer n and you can do operations as follow: If n is even, replace n with n/2. If n is odd, you can replace n with either n + 1 or n - 1. What is the minimum number of replacements needed for n to become 1? Example 1: Input: 8 Outp…

Given a positive integer n and you can do operations as follow: If n is even, replace n with n/2. If n is odd, you can replace n with either n + 1 or n - 1. What is the minimum number of replacements needed for n to become 1? Example 1: Input: 8 Outp…

Given a positive integer n and you can do operations as follow: If n is even, replace n with n/2. If n is odd, you can replace n with either n + 1 or n - 1. What is the minimum number of replacements needed for n to become 1? Example 1: Input: 8 Outp…

Question Given a positive integer n and you can do operations as follow: If n is even, replace n with n/2. If n is odd, you can replace n with either n + 1 or n - 1. What is the minimum number of replacements needed for n to become 1? Example 1: Inpu…

先正统做法. public class Solution { public int integerReplacement(int n) { if(n == 1) return 0; int res = 0; while(n != 1) { if(n % 2 == 0) { n/=2; res++; } else return res + odd(n); } return res; } public int odd(int n) { return Math.min(integerReplaceme…

https://leetcode.com/problems/integer-replacement/#/solutions 这题是一道典型的搜索问题,我采用广度搜索,可以直接输出最短路径.这题的testcase 貌似有bug,在n == INT_MAX 也就是2^31 - 1  的时候最优解是32,我觉得应该是33.在代码里针对这个数字adhoc 一下,直接返回32. void replaceIter(int &level, vector<vector<int> *> &a…

给定一个正整数 n,你可以做如下操作:1. 如果 n 是偶数,则用 n / 2替换 n.2. 如果 n 是奇数,则可以用 n + 1或n - 1替换 n.n 变为 1 所需的最小替换次数是多少?示例 1:输入:8输出:3解释:8 -> 4 -> 2 -> 1示例 2:输入:7输出:4解释:7 -> 8 -> 4 -> 2 -> 1或7 -> 6 -> 3 -> 2 -> 1详见:https://leetcode.com/problems/i…