Program assigment done

Author: ocharan

cachematrix.R

@@ -1,15 +1,34 @@
-## Put comments here that give an overall description of what your
-## functions do
+## This functions cache the inverse of a matrix in order to
+## make computation less costly.
 
-## 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
+## `cacheSolve` should retrieve the inverse from the cache.
 
 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
 }