Add basic working implementations

wcooley · wcooley · commit 93cc08e32a4c · 2014-05-24T11:13:23.000-07:00
diff --git a/cachematrix.R b/cachematrix.R
@@ -4,12 +4,32 @@
 ## Write a short comment describing this function
 
 makeCacheMatrix <- function(x = matrix()) {
+    invmatrix <- NULL
+    set <- function(y) {
+        x <<- y
+        m <<- NULL
+    }
 
+    get <- function() x
+
+    setinverse <- function(inv) invmatrix <<- inv
+    getinverse <- function() invmatrix
+
+    list(set=set, get=get, setinverse=setinverse, getinverse=getinverse)
 }
 
 
 ## Write a short comment describing this function
 
 cacheSolve <- function(x, ...) {
         ## Return a matrix that is the inverse of 'x'
+    m <- x$getinverse()
+    if(!is.null(m)) {
+        message("getting cached data")
+        return(m)
+    }
+    data <- x$get()
+    m <- solve(data, ...)
+    x$setinverse(m)
+    m
 }
