[LeetCode] 038. Count and Say (Easy) (C++/Python)

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[LeetCode] 038. Count and Say (Easy) (C++/Python)

索引:[LeetCode] Leetcode 题解索引 (C++/Java/Python/Sql) Github: https://github.com/illuz/leetcode 038. Count and Say (Easy) 链接: 题目:https://leetcode.com/problems/Count-and-Say/ 代码(github):https://github.com/illuz/leetcode 题意: 数数.第一个是 1,第二个是数前一个数:1 个 1,就是 11…

【leetcode】Count Primes（easy）

Count the number of prime numbers less than a non-negative number, n 思路:数质数的个数开始写了个蛮力的,存储已有质数,判断新数字是否可以整除已有质数.然后妥妥的超时了(⊙v⊙). 看提示,发现有个Eratosthenes算法找质数的,说白了就是给所有的数字一个标记,把质数的整数倍标为false,那么下一个没被标为false的数字就是下一个质数. int countPrimes(int n) { ) ; bool * mark…

Java for LeetCode 038 Count and Say

The count-and-say sequence is the sequence of integers beginning as follows: 1, 11, 21, 1211, 111221, ... 1 is read off as "one 1" or 11. 11 is read off as "two 1s" or 21. 21 is read off as "one 2, then one 1" or 1211. Given…

LeetCode 038 Count and Say

题目要求:Count and Say The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ... 1 is read off as "one 1" or 11.11 is read off as "two 1s" or 21.21 is read off as "one 2, then one 1"…

[array] leetcode - 35. Search Insert Position - Easy

leetcode - 35. Search Insert Position - Easy descrition Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order. You may assume no duplicates in the arr…

【LeetCode】120. Triangle 解题报告（Python）

[LeetCode]120. Triangle 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址https://leetcode.com/problems/triangle/description/ 题目描述: Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjac…

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