作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 暴力 双指针 递归 动态规划 日期 题目地址:https://leetcode.com/problems/arithmetic-slices/description/ 题目描述 A sequence of number is called arithmetic if it consists of at least three elements and…

如果一个数列至少有三个元素,并且任意两个相邻元素之差相同,则称该数列为等差数列.例如,以下数列为等差数列:1, 3, 5, 7, 97, 7, 7, 73, -1, -5, -9以下数列不是等差数列.1, 1, 2, 5, 7数组 A 包含 N 个数,且索引从0开始.数组 A 的一个子数组划分为数组 (P, Q),P 与 Q 是整数且满足 0<=P<Q<N .如果满足以下条件,则称子数组(P, Q)为等差数组:元素 A[P], A[p + 1], ..., A[Q - 1], A[Q]…

这个开始自己做的动态规划复杂度达到了O(n), 是用的是2维的矩阵来存前面的数据,复杂度太高了, 虽然好理解,但是没效率,后面看这个博客发现没有动态规划做了这个题 也是比较厉害. 转载地址: https://blog.csdn.net/camellhf/article/details/52824234#commentBox LeetCode 413. Arithmetic Slices 解题报告 题目描述 A sequence of number is called arithmetic if…

lc 413 Arithmetic Slices 413 Arithmetic Slices A sequence of number is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is the same. For example, these are arithmetic sequence: 1,…

A sequence of number is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is the same. For example, these are arithmetic sequence: 1, 3, 5, 7, 9 7, 7, 7, 7 3, -1, -5, -9 The followi…

1.题目大意 A sequence of number is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is the same. For example, these are arithmetic sequence: 1, 3, 5, 7, 9 7, 7, 7, 7 3, -1, -5, -9 The…

338.Counting Bits - Medium Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and return them as an array. Example: For num = 5 you should return [0,1,1,2,1…

Leetcode 413. Arithmetic Slice 算术序列切片(动态规划,暴力) 题目描述 如果一个数组1.至少三个元素2.两两之间差值相同,那么这个数组就是算术序列 比如下面的数组都是算术序列: 1, 3, 5, 7, 9 7, 7, 7, 7 3, -1, -5, -9 但是这一个就不是: 1, 1, 2, 5, 7 求给定数组,能有多少个算术序列 测试样例 Input: [1, 2, 3, 4] Output: 3 有三个算术序列切片: [1,2,3], [2,3,4], [1…

Description A sequence of number is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is the same. For example, these are arithmetic sequence: 1, 3, 5, 7, 9 7, 7, 7, 7 3, -1, -5, -9…

/**************************Sorry. We do not have enough accepted submissions.************************/ A sequence of number is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is t…