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
84 lines (70 loc) · 2.21 KB
/
cachematrix.R
File metadata and controls
84 lines (70 loc) · 2.21 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
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
## Put comments here that give an overall description of what your
## functions do
# makeCacheMatrix is a function which is a frame of other functions
# * setMatrix
# * getMatrix
# * setcacheValue (invers of matrix)
# * getCacheValue (invers of matrix)
###############################################
makeCacheMatrix <- function(x = numeric()) {
# initialize cache value
cache <- NULL
# function stores the matrix
###############################################
setMatrix <- function(newValue) {
# newValue will store in cache
x <<- newValue
# Cache flushing
cache <<- NULL
}
# funtion return stored matrix
###############################################
getMatrix <- function() {
x
}
# function cache given parameter
###############################################
setcacheValue <- function(solve) {
cache <<- solve
}
# function retern cached value
###############################################
getCacheValue <- function() {
cache
}
# return the list of given functions
###############################################
list(setMatrix = setMatrix,
getMatrix = getMatrix,
setcacheValue = setcacheValue,
getCacheValue = getCacheValue
)
}
# cacheSolve is a function which calculate the invers of a square invertible matrix
# with function makeCacheMatrix
###############################################
cacheSolve <- function(y, ...) {
# get value from function makeCacheMatrix,
# if its already cached
###############################################
inverse <- y$getCacheValue()
# check if value is in cache
###############################################
if(!is.null(inverse)) {
# return message and cached value
message("getting cached data")
return(inverse)
}
# get matrix from function makeCacheMatrix
###############################################
data <- y$getMatrix()
# calculate the invers
###############################################
inverse <- solve(data)
# save result in cache via makeCacheMatrix function
###############################################
y$setcacheValue(inverse)
# return the inverse
###############################################
inverse
}