k4rtik

# An attempt to programmatically access NITC library's checkouts section to find out how many books are due by a particular date.
# For some reason, the behaviour of the library site was different for different browsers - perhaps identifying and
# using proper browser UserAgent string could have made this script work.

import re
from mechanize import Browser

br = Browser()
br.addheaders = [('User-agent', 'Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20100101 Firefox/6.0')]
br.open("http://library.nitc.ac.in:8080/webopac/html/checkouts")

k4rtik

(define (sqrt2 x)
  (define (square num)
    (* num num))
  (define (average a1 a2)
    (/ (+ a1 a2) 2))
  (define (improve guess)
    (average guess (/ x guess)))
  (define (good-enough? guess)
    (< (abs (- (square guess) x))
       .000000001))

k4rtik

/* Question 1: Implement Rabin-Miller algorithm for Primality Testing. */

/*
   Input: n>3, an odd number, k for accuracy
   Output: 'composite' or 'possibly prime'
*/
rabinmiller(n, k) = {
	d = n - 1;
	s = 0;
	while( (d%2 == 0),

k4rtik

/* Question 2: Implement Knapsack Cryptosystem. */

/*
   n - the size of all vectors is fixed at 7.
   a is the superincreasing sequence (assumed public key of receiver)

   example a:
	[1,2,4,8,16,32,64]
   m, a 7-bit number - the message to be encrypted
   c, ciphertext

k4rtik

/* Question 3: Implement RSA Cryptosystem. */

/*
   Call keygen function first.
   Use the key generated to encrypt and decrypt message using
   corresponding functions.
*/

fastexp(a, x, n) = {
	c = 0;

k4rtik

/* Link for more info: http://k4rtik.wordpress.com/2009/11/08/my-old-projects/ */

/*

>>>>>>>>>>>>>>>>>>>>Program: Tic Tac Toe<<<<<<<<<<<<<<<<<<<<<

>>>>>>>>>>>>>>>>>Programmer: Kartik Singhal<<<<<<<<<<<<<<<<<<

*/

k4rtik

/*
 * endian.c
 * Program to check the endianness of a machine.
 *
 * Copyright (C) 2011 - Kartik Singhal
 *
 * License: GNU General Public License version 3
 *
 */

k4rtik

/*
 * ieee754.c
 *
 * Program to check whether the compiler converts a given floating point number
 * to the IEEE 754 specification.
 *
 * Original Authors: Mohammed Hashir and Ashwin Jacob
 * This is a slightly modified and improved version by
 *
 * Kartik Singhal - B090566CS

k4rtik

#!/bin/bash
baseurl="http://www.archive.org/download/MIT_Structure_of_Computer_Programs_1986/lec"
urlend="b_512kb.mp4"
log="log_b"
for i in {5..7}
do
	nohup wget -c "${baseurl}$i${urlend}" > "${log}$i" &
done

k4rtik

//	file: string-func.cpp
//	generates email IDs and stores them in a file
//	author: Kartik Singhal

#include <iostream>
#include <cstring>
#include <fstream>
using namespace std;

int main()