cachematrix.R

## Put comments here that give an overall description of what your
## functions do
##This file contains functions to compute inverse of a given matrix.
##Once the inverse is computed, it is cached.

## Write a short comment describing this function
##makeCacheMatrix creates a special "matrix", 
##which is really a list containing a function to
##set the value of the matrix
##get the value of the matrix
##set the value of the inverse
##get the value of the inverse

makeCacheMatrix <- function(x = matrix()) {
  inv <- NULL
  set <- function(y) {
    x <<- y
    inv <<- NULL
  }
  
  get <- function() x
  setinverse <- function(inverse) inv <<- inverse;
  getinverse <- function() inv
  
  list(set = set, get = get, setinverse = setinverse, getinverse = getinverse)
}




## Write a short comment describing this function
##The following function calculates the inverse of the special "matrix" 
##created with the above function. However, it first checks to see 
##if the inverse has already been calculated. 
##If so, it gets the inverse from the cache and skips the computation. 
##Otherwise, it calculates the inverse of the matrix and 
##sets the value of the inverse in the cache via the setinverse function

cacheSolve <- function(x, ...) {
        ## Return a matrix that is the inverse of 'x'
  
  inv <- x$getinverse()
  if (!is.null(inv)) {
    message("getting cached inverse")
    return (inv)
  }
  
  data <- x$get()
  inv <- solve(data)
  x$setinverse(inv)
  inv
  
}