.gitignore

*.class
*.jar
countby

count.clj

(defn count-to [i n]
  (if (= i n)
    i
    (recur (inc i) n)))


(println  (time (count-to 0 1000000)))

count.js

function count_to(n) {
  var i = 0;
  while(i < n) {
    i = i + 1;
  }
  return i
}

var start = new Date();
var result = count_to(1000000);
var end = new Date();

console.log(result);
console.log(end.getTime() - start.getTime());

count.py

from time import time

def count_to(n):
    i = 0
    while i < n:
        i = i + 1
    return i

start = time()
result = count_to(1000000)
end = time()

print result
print (end - start) * 1000

countby.c

#include <stdio.h>
#include <time.h>
#include <unistd.h>

long count_by(long n) {
  long i = 0;
  while(i < n) {
    i++;
  }
  return i;
}

int main(int argc, char *argv[]) {
  struct timeval start, end;
  long elapsed, result;
  
  gettimeofday(&start, NULL);
  result = count_by(1000000);
  gettimeofday(&end, NULL);

  elapsed = (end.tv_usec - start.tv_usec) / 1000;

  printf("%li\n", result);
  printf("%li\n", elapsed);
}

CountBy.java

class CountBy {
    public static int countBy(int n) {
        int i = 0;

        while(i < n) {
            i++;
        }
        return i;
    }

    public static void main(String [] args) {
        int result;
        long endTime, startTime;

        startTime = System.currentTimeMillis();
        result = CountBy.countBy(1000000);
        endTime = System.currentTimeMillis();

        System.out.println(result);
        System.out.println(endTime - startTime);
    }
}

Makefile

all: countby CountBy.class
	./run.sh

countby:
	gcc -o countby countby.c

CountBy.class:
	javac CountBy.java

clean:
	rm CountBy.class
	rm countby

result.txt

C:
1000000
2

Java:
1000000
10

Python:
1000000
85.3998661041

PyPy:
1000000
3.0632019043

Node:
1000000
5

Clojure:
"Elapsed time: 35.947 msecs"
1000000

run.sh

echo "C:"
./countby
echo
echo "Java:"
java CountBy
echo
echo "Python:"
python count.py
echo
echo "PyPy:"
pypy count.py
echo
echo "Node:"
node count.js
echo
echo "Clojure:"
java -cp clojure-1.3.0.jar clojure.main count.clj