Leetcode 1630. Arithmetic Subarrays

Posted 2021-08-21 SnailTyan

文章作者：Tyan
博客：noahsnail.com  |  CSDN  |  简书

1. Description

2. Solution

**解析：**Version 1，根据左右索引，对数组切片，然后排序，判断其是否是算术(等差)子数组。

• Version 1

class Solution:
    def checkArithmeticSubarrays(self, nums: List[int], l: List[int], r: List[int]) -> List[bool]:
        m = len(l)
        result = []
        for i in range(m):
            left = l[i]
            right = r[i]
            temp = nums[left:right+1]
            temp.sort()
            flag = True
            for j in range(2, len(temp)):
                if temp[j] - temp[j-1] != temp[j-1] - temp[j-2]:
                    flag = False
                    break
            result.append(flag)
        return result

Reference

1. https://leetcode.com/problems/arithmetic-subarrays/