Package g0401_0500.s0413_arithmetic_slices

Class Solution

java.lang.Object
g0401_0500.s0413_arithmetic_slices.Solution
public class Solution extends java.lang.Object
413 - Arithmetic Slices.

Medium

An integer array 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, [1,3,5,7,9], [7,7,7,7], and [3,-1,-5,-9] are arithmetic sequences.

Given an integer array nums, return the number of arithmetic subarrays of nums.

A subarray is a contiguous subsequence of the array.

Example 1:

Input: nums = [1,2,3,4]

Output: 3

Explanation: We have 3 arithmetic slices in nums: [1, 2, 3], [2, 3, 4] and [1,2,3,4] itself.

Example 2:

Input: nums = [1]

Output: 0

Constraints:

  • 1 <= nums.length <= 5000
  • -1000 <= nums[i] <= 1000

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    numberOfArithmeticSlices(int[] nums)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • numberOfArithmeticSlices

      public int numberOfArithmeticSlices(int[] nums)