asst 2

Author: pevzner

cachematrix.R

@@ -5,15 +5,18 @@
 ## and retrieving a matrix (set, get), as well as storing and retrieving
 ## the matrix's inverse (setinverse, getinverse).
 makeCacheMatrix <- function(x = matrix()) {
-  inv <- NULL
-  set <- function(y) {
-    x <<- y
-    inv <<- NULL ## reset the inverse to null
-  }
-  get <- function() x
-  setinverse <- function(inverse) inv <<- inverse
-  getinverse <- function() inv
-  list(set = set, get = get,
+    inv <- NULL
+    
+    set <- function(y) {
+        x <<- y
+        inv <<- NULL ## reset the inverse to null
+    }
+    get <- function() x
+
+    setinverse <- function(inverse) inv <<- inverse
+    getinverse <- function() inv
+
+    list(set = set, get = get,
        setinverse = setinverse,
        getinverse = getinverse)
 }
@@ -25,14 +28,15 @@ makeCacheMatrix <- function(x = matrix()) {
 ## - If a cached value does not exist, then the function calculates
 ## the inverse, caches it, and returns that value.
 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$setinverse(inv)
-  inv
+    inv <- x$getinverse()
+    if(!is.null(inv)) {
+        message("getting cached data")
+        return(inv)
+    }
+
+    data <- x$get()
+    inv <- solve(data)
+    x$setinverse(inv)
+    
+    inv
 }