Answered: Java task Based on…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Java task

Based on PercolationProbability.java (provided below), write a program that uses both versions of percolation (provided below) and compute the probability that a system percolates, but does not percolate directed downward, you need N and p from the command line.

PercolationProbability: https://introcs.cs.princeton.edu/java/24percolation/PercolationProbability.java

percolation: https://introcs.cs.princeton.edu/java/24percolation/Percolation.java

Here are some examples:
Command (for Percolation2.java):
java -Dseed=1234 Estimate 6 0.56 100
0.15

Expert Solution

Step 1

public class Percolation
{
   public static boolean[][] flow(boolean[][] isOpen)
   {
      int n = isOpen.length;
      boolean[][] isFull = new boolean[n][n];
      // The isFull[][] matrix computation goes here.
      return isFull;
   }

   public static boolean percolates(boolean[][] isOpen)
   {
      boolean[][] isFull = flow(isOpen);
      int n = isOpen.length;
      for (int j = 0; j < n; j++)
         if (isFull[n-1][j]) return true;
      return false;
   }

   public static void main(String[] args)
   {
      boolean[][] isOpen = StdArrayIO.readBoolean2D();
      StdArrayIO.print(flow(isOpen));
      StdOut.println(percolates(isOpen));
   }
}

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