C Applications and tools

RandomNumberGenerator

• Generates random numbers(float)
• To modify the algorithm, change the integer values in the switch case (preferably to some primes)

CountdownTimer

• A simple countdown timer accurate to +/- 1s

CaesarCipher

• A very simple cipher called Caesar cipher (dig up on wiki to know more)
• 'n' number of encrypts should be followed by 'n' number of decrypts
• To change the algorithm, change the value of the "DISP" macro in both the files
• Usage: You and the receiver must know the password...knowing the password, sender sends the encrypted 'message' file along with the executable of the decrypter and Voila at the receivers end!

JumpSearch

• A simple, efficient search algorithm
• Requires the array to be sorted
• The algorithm mimics a human searching for a page in a book without using the contents/index
• The algorithm is most efficient(better than BinarySearch) when the difference between successive elements of the array is close to the value (array[N] / N), where N is size of array
• The algorithm is always better than LinearSearch and can outperform BinarySearch under the above mentioned condition

Regular Expression Evaluator

• A simple regular expression evaluator (Supports only 'star' and 'plus' R.E symbols
• Takes in a regular expression and a string and evaluates the string according to the regular expression entered and returns boolean
• (work in progress)

DateToDay Converter

• A simple date-day converter
• Takes in the date in the format dd/mm/yy and outputs the 'day'.
• Eg: Ip: 18 01 2014 Op: This is a Saturday.