misc Directory Reference

Files
file	poly_add.c
	Implementation of [Addition of two polynomials] (https://en.wikipedia.org/wiki/Polynomial#Addition)
file	postfix_evaluation.c
	Postfix evaluation algorithm implementation
file	rot13.c
	ROT13 is a simple letter substitution cipher that replaces a letter with the 13th letter after it in the alphabet.
file	run_length_encoding.c
	Encode a null terminated string using Run-length encoding
file	sudoku_solver.c
	Sudoku Solver using recursive implementation of brute-force algorithm.
file	union_find.c
	Union find algorithm.