Package g0401_0500.s0413_arithmetic_slices

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    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

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Integer numberOfArithmeticSlices(IntArray nums)

      • Methods inherited from class java.lang.Object

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