/* * @lc app=leetcode id=829 lang=cpp * * [829] Consecutive Numbers Sum */ // @lc code=start class Solution { public: int consecutiveNumbersSum(int N) { int res = 0; for (int m = 1; ; ++m) { int x = N - m * (m - 1) / 2; if (x <= 0) break; if (x % ...
Solution 1 of runtime O(sqrt(N)) that you came up. Because we must find consecutive numbers that sum up to N, so for a given length K, we can only have at most 1 valid sequence. Based on this, we can solve this problem by looping through all possible length and check if a give...
1classSolution {2publicintconsecutiveNumbersSum(intN) {3intres = 1;4for(intk = 2; k < Math.sqrt(2 * N); k++) {5if((N - k * (k - 1) / 2) % k == 0) {6res++;7}8}9returnres;10}11}
因为m能取到的最大值显然是sqrt(n)数量级的 1classSolution {2intconsecutiveNumbersSum(intN) {3intans =0;4for(intm =1; ; m++) {5intmx = N - m * (m-1) /2;6if(mx <=0)7break;8if(mx % m ==0)9ans++;10}11returnans;12}13} 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 1...
LeetCode-829. Consecutive Numbers Sum Given a positive integer N, how many ways can we write it as a sum of consecutive positive integers? Example 1: Example 2: Example 3: Note: 1 <= N <= 10 ^ 9. 题解: 本题使用左右指针滑动窗口的话超时,......
180. Consecutive Numbers(leetcode) - MySQL ...LeetCode刷题笔记 - 180. Consecutive Numbers 2018-10-22 180.Rank Scores 文章目录 180.Rank Scores 一、Description: 二、Solution: 解法一: 解法二: 一、Description: Write a SQL query to find all numbers that appear at least three times ...
Consecutive Numbers(找出连续出现的数字) 2、题目地址 https://leetcode.com/problems/consecutive-numbers/ 3、题目内容 写一个SQL,查出表Logs中连续出现至少3次的数字: +---+---+ | Id | Num | +---+---+ | 1 | 1 | | 2 | 1 | | 3 | ...
LeetCode180. Consecutive Numbers - 连续出现的数字 编写一个 SQL 查询,查找所有至少连续出现三次的数字。 +---+---+ | Id | Num | +---+---+ | 1 | 1 | | 2 | 1 | | 3 | 1 | | 4 | 2 | | 5 | 1 | | 6 | 2 | | 7 |...
Write a SQL query to find all numbers that appear at least three times consecutively. +---+---+ | Id | Num | +---+---+ | 1 | 1 | | 2 | 1 | | 3 | 1 | | 4 | 2 | | 5 | 1 | | 6 | 2 | | 7 | 2 | +---+-...
LeetCode problem solving notes. Use the sliding window to solve the problem: input a positive integer `target`, and output all consecutive positive integer sequences (containing at least two numbers) whose sum is `target`.