Package g3501_3600.s3584_maximum_product_of_first_and_last_elements_of_a_subsequence

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    3584 - Maximum Product of First and Last Elements of a Subsequence.

    Medium

    You are given an integer array nums and an integer m.

    Return the maximum product of the first and last elements of any subsequences of nums of size m.

    Example 1:

    Input: nums = -1,-9,2,3,-2,-3,1, m = 1

    Output: 81

    Explanation:

    The subsequence [-9] has the largest product of the first and last elements: -9 * -9 = 81. Therefore, the answer is 81.

    Example 2:

    Input: nums = 1,3,-5,5,6,-4, m = 3

    Output: 20

    Explanation:

    The subsequence [-5, 6, -4] has the largest product of the first and last elements.

    Example 3:

    Input: nums = 2,-1,2,-6,5,2,-5,7, m = 2

    Output: 35

    Explanation:

    The subsequence [5, 7] has the largest product of the first and last elements.

    Constraints:

    • <code>1 <= nums.length <= 10<sup>5</sup></code>

    • <code>-10<sup>5</sup><= numsi<= 10<sup>5</sup></code>

    • 1 &lt;= m &lt;= nums.length

    • 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 Long maximumProduct(IntArray nums, Integer m)

      • Methods inherited from class java.lang.Object

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