diff --git a/cachematrix.R b/cachematrix.R index a50be65aa44..61a43986977 100644 --- a/cachematrix.R +++ b/cachematrix.R @@ -1,15 +1,30 @@ ## Put comments here that give an overall description of what your ## functions do -## Write a short comment describing this function +## This function creates a special "matrix" object that can cache its 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 - +## This function computes the inverse of the special "matrix" returned by makeCacheMatrix. cacheSolve <- function(x, ...) { - ## Return a matrix that is the inverse of 'x' + inv <- x$getInverse() + if(!is.null(inv)) { + message("getting cached data") + return(inv) + } + data <- x$get() + inv <- solve(data, ...) + x$setInverse(inv) + inv }