Submission.

shantanoo · shantanoo · commit a78a8e68577e · 2014-09-16T00:36:05.000+05:30
diff --git 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()) {
-
+    m <- NULL
+    set <- function(y) {
+        x <<- y
+        m <<- NULL
+    }
+    get <- function() x
+    setinverse <- function(solve) m <<- solve
+    getinverse <- function() m
+    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 above. If the inverse has already been calculated (and 
+## the matrix has not changed), then the cachesolve should retrieve the
+## inverse from the cache.
 cacheSolve <- function(x, ...) {
-        ## Return a matrix that is the inverse of '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
+}
