From 0caaf5fdf0ffbdfe94ee623c49166c157d863d05 Mon Sep 17 00:00:00 2001
From: alexfding <ialexding@hotmail.com>
Date: Tue, 22 Apr 2014 17:13:58 -0500
Subject: [PATCH] contain cacheMatrix solution code

---
 cachematrix.R | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/cachematrix.R b/cachematrix.R
index a50be65aa44..30cc7c41427 100644
--- a/cachematrix.R
+++ b/cachematrix.R
@@ -1,15 +1,37 @@
-## Put comments here that give an overall description of what your
-## functions do
+## two functions that cache the inverse of a matrix(assumed invertiable)
 
-## Write a short comment describing this function
+## makeCacheMatrix creates a special "matrix" object which cache its inverse
 
 makeCacheMatrix <- function(x = matrix()) {
 
+	m <- NULL
+        set <- function(y) {
+                x <<- y
+                m <<- NULL
+        }
+        get <- function() x
+        setsolve <- function(solve) m <<- solve
+        getsolve <- function() m
+        list(set = set, get = get,
+             setsolve = setsolve,
+             getsolve = getsolve)
+
 }
 
 
-## Write a short comment describing this function
+##cacheSolve calculates the inverse of the special "matrix" above, and it checks first whether the invese
+##has been calculated. If so "gets" from cache, otherwise calculates and sets via setsolve function
 
 cacheSolve <- function(x, ...) {
         ## Return a matrix that is the inverse of 'x'
+        m <- x$getsolve()
+        if(!is.null(m)) {
+                message("getting cached data")
+                return(m)
+        }
+        data <- x$get()
+        m <- solve(data, ...)
+        x$setsolve(m)
+        m
+
 }