cachematrix.R

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)
        }

cacheSolve <- function(x, ...) {
        inv <- x$getinverse()

        if(!is.null(inv)) {
                message("getting cached data")
                return(inv)
                }
        data <- x$get()
        inv <- solve(data, ...)
        x$setinverse(inv)
        inv
        }