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cachematrix.R
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44 lines (39 loc) · 1.29 KB
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## Programming Assignment starts here
# makeCacheMatrix creates a special "matrix", which is really a list containing a function to
# 1. set the value of the matrix
# 2. get the value of the matrix
# 3. set the value of the inverted matrix
# 4. get the value of the inverted matrix
makeCacheMatrix <- function(x = matrix()) {
inverseMatrix <- NULL
set <- function(y) {
x <<- y
inverseMatrix <<- NULL
}
get <- function() x
setInverse <- function(inverse) inverseMatrix <<- inverse
getInverse <- function() inverseMatrix
list(
set = set,
get = get,
setInverse = setInverse,
getInverse = getInverse
)
}
# The following function calculates the inverse of the matrix
# created with the above function. However, it first checks to see if
# the inverse has already been calculated. If so, it gets the inverse from
# the cache and skips the computation. Otherwise, it calculates the
# inverse of the matrix and sets the value of the inverse in the cache via
# the setInverse function.
cacheSolve <- function(x, ...) {
inverse <- x$getInverse()
if(!is.null(inverse)) {
message("getting cached data")
return(inverse)
}
square <- x$get()
inverse <- solve(square)
x$setInverse(inverse)
inverse
}