forked from rdpeng/ProgrammingAssignment2
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathcachematrix.R
More file actions
35 lines (34 loc) · 1.22 KB
/
cachematrix.R
File metadata and controls
35 lines (34 loc) · 1.22 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
## Mohamed Mahyoub
## Put comments here that give an overall description of what your
## functions do
## Write a short comment describing this function
##makeCacheMatrix: This function creates a special "matrix" object that can cache its inverse.
makeCacheMatrix <- function(x = matrix()) {
cache <- NULL
set<-function(z){
x<<-z
cache <- NULL
}
# returns the stored matrix
get <- function() x
# cache the given argument
setCache <- function(solve) cache <<- solve
# get the cached value
getCache <- function() cache
# return a list
list(set = set, get = get, setCache = setCache, getCache = getCache)
}
## Write a short comment describing this function
cacheSolve <- function(x, ...) {
##cacheSolve: 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.
## Return a matrix that is the inverse of 'x'
cache <- x$getCache()
if(!is.null(cache)) {message("loading cached data")return(cache) }
data <- x$get()
cache <- solve(data, ...)
x$setCache(cache)
cache
}
## Done ! :)