Class MaxPairWiseProduct5

java.lang.Object
topics.foundation.maxpairwise.MaxPairWiseProduct5
public class MaxPairWiseProduct5 extends Object

Maximum Pairwise Product (Ascending Sort Strategy)

Evaluates the maximum pairwise product from a dataset of integers loaded from an external text file. This implementation achieves the same O(N log N) efficiency as the descending sort method, but utilizes the default ascending order, extracting the maximum candidates directly from the tail of the collection.

Complexity

  • Time Complexity: O(N log N) - The time required is strictly dominated by the native sorting algorithm (TimSort). This avoids the quadratic bottleneck of a brute-force search.
  • Space Complexity: O(N) - Requires linear memory to store the dataset in the collection prior to sorting.
Author:
vicegd

  • Constructor Summary

    Constructors
    Constructor
    Description
    MaxPairWiseProduct5()
    Initializes the computational context by reading a single-line dataset of space-separated integers from the filesystem into memory.

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    compute()
    Computes the maximum mathematical product by sorting the array in its default ascending order and multiplying the two final elements.

    Methods inherited from class Object

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

  • Constructor Details

    • MaxPairWiseProduct5

      public MaxPairWiseProduct5()
      Initializes the computational context by reading a single-line dataset of space-separated integers from the filesystem into memory.

  • Method Details

    • compute

      public long compute()
      Computes the maximum mathematical product by sorting the array in its default ascending order and multiplying the two final elements.

      Note: Like previous iterations, this specific logic assumes a dataset where the largest product stems from two positive integers.

      Returns:
      The highest mathematical pairwise product found in the dataset.
      Throws:
      IllegalStateException - if the dataset contains fewer than two elements.