Java vs Ruby performance comparision.

In Levelfive solutions, we have used so many technologies for our client projects.

Before we choose any technology or a programming language, we always understand the client’s requirements and accordingly choose it. But its mandatory for the programmers to understand the performance of the language well.

This post will show you the performance of Java vs Ruby.  For performance, we have used Brute Force Prime Generator and also we have tested the solution across Windows Machine and Linux Machine as well.

Here is the short explanation about the Brute Force,

“A problem solving technique where a series of possible answers are worked out and each possibility is tested for accuracy. This technique is particularly useful on multiple choice problems.”

Here is the ruby code for Brute Force Prime Generator

def BruteForce(topCandidate)
  totalCount = 1
  isPrime = true

  3.step(topCandidate, 2) do |i|
    j=3

while j*j < = i && isPrime
      isPrime = false if i%j==0
      j += 2
    end

    isPrime ? totalCount += 1 : isPrime = true
  end

totalCount
end



max = 1000000
startTime = Time.now()
primes = BruteForce(max)
endTime = Time.now()
elapsed = endTime - startTime
printf("Elapsed time for Brute Force : %f Primes = %dn", elapsed, primes)

and Corresponding Java Code is

package com.perf;

public class PerformanceTest {

public static void main(String[] args) {
long start = System.currentTimeMillis();
int total = bruteForce(1000000);
long end = System.currentTimeMillis();
         System.out.println("The total is : " + total +" difference : " + (end-start));
    }

public static int bruteForce(long topCandidate) {
int totalCount = 1;
        boolean isPrime = true;
for (long i = 3; i < topCandidate; i += 2) {
for (int j = 3; j * j < = i; j += 2) {
if ((i % j) == 0) {
                    isPrime = false;
break;
                }
            }
if (isPrime) {
                totalCount++;
            } else
                isPrime = true;
        }
return totalCount;
    }
}

Here is how performed in Windows.

Here is our thoughts on the language

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