Package g3001_3100.s3040_maximum_number_of_operations_with_the_same_score_ii

Class Solution

java.lang.Object
g3001_3100.s3040_maximum_number_of_operations_with_the_same_score_ii.Solution
public class Solution extends java.lang.Object
3040 - Maximum Number of Operations With the Same Score II.

Medium

Given an array of integers called nums, you can perform any of the following operation while nums contains at least 2 elements:

  • Choose the first two elements of nums and delete them.
  • Choose the last two elements of nums and delete them.
  • Choose the first and the last elements of nums and delete them.

The score of the operation is the sum of the deleted elements.

Your task is to find the maximum number of operations that can be performed, such that all operations have the same score.

Return the maximum number of operations possible that satisfy the condition mentioned above.

Example 1:

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

Output: 3

Explanation: We perform the following operations:

  • Delete the first two elements, with score 3 + 2 = 5, nums = [1,2,3,4].
  • Delete the first and the last elements, with score 1 + 4 = 5, nums = [2,3].
  • Delete the first and the last elements, with score 2 + 3 = 5, nums = [].

We are unable to perform any more operations as nums is empty.

Example 2:

Input: nums = [3,2,6,1,4]

Output: 2

Explanation: We perform the following operations:

  • Delete the first two elements, with score 3 + 2 = 5, nums = [6,1,4].
  • Delete the last two elements, with score 1 + 4 = 5, nums = [6].

It can be proven that we can perform at most 2 operations.

Constraints:

  • 2 <= nums.length <= 2000
  • 1 <= nums[i] <= 1000

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    maxOperations(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

    • maxOperations

      public int maxOperations(int[] nums)