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.
input = [1, 2, 3, 4， 6，8，10]
return: 3, for 3 arithmetic slices in A: [1, 2, 3], [2, 3, 4] ，[1, 2, 3, 4]，[6,8,10].
求等比数列的个数！
用两个变量， 一个记录当前的连续等比有几个， 不如123 cur =1， 234 cur =2，
再用另一个变量存储总共的可能性 1234 count = 1+2= 3;
413. Arithmetic Slices A sequence of number is called ari...
https://leetcode.com/problems/arithmetic-slices/descripti...
A sequence of number is called arithmetic if it consists ...
题目 A sequence of number is called arithmetic if it consis...
一道DP基础题，将每一步的记录在数组中就好，例如：
A sequence of number is called arithmetic if it consists ...
简单的动归，若i-2, i-1, i等差，则以第i个数结尾的等差数列总数=以i-1个数结尾的等差数列总数+1。需要...
413. Arithmetic Slices 题目大意：找出数组中存在多少等差序列(该序列在原数组是连续的) 解题...
题目链接 https://leetcode.com/problems/arithmetic-slices/desc...
本文标题：413. Arithmetic Slices
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