array-math - npm Package Compare versions

Comparing version 0.0.5 to 0.0.6

index.js

@@ -43,3 +43,3 @@ function factors(n) {
 function range(low, high) {
-	if (!low) {
+	if (typeof low === 'undefined') {
 		low = 0
@@ -62,9 +62,15 @@ high = 0
 function multiply(a) {
-	return a.reduce(function (memo, curr) { return memo*curr }, 1)
+	return a.reduce(function(memo, curr) { return memo*curr }, 1)
 }
 
 function sum(a) {
-	return a.reduce(function (memo, curr) { return memo+curr }, 0)
+	return a.reduce(function(memo, curr) { return memo+curr }, 0)
 }
 
+function factorial(high, low) {
+	if (typeof low === 'undefined')  low = 0
+	if (typeof high === 'undefined') high = 0
+	return multiply( range(low, high+1).filter(function(e) { return (e!==0) }) )
+}
+
 module.exports = {
@@ -76,3 +82,4 @@ factors: factors,
 	multiply: multiply,
-	sum: sum
+	sum: sum,
+	factorial: factorial
 }

package.json

 {
   "name": "array-math",
-  "version": "0.0.5",
+  "version": "0.0.6",
   "main": "./index.js",
@@ -9,12 +9,13 @@ "author": {
   },
-  "description": "Do math on arrays: find divisors or factors of a number, sum or multiply an array, and more!",
+  "description": "Do math on arrays: find divisors or factors of a number, sum or multiply an array, and much more!",
   "keywords": [
-    "math",
-	"array",
-	"factor",
+    "factor",
     "divisor",
-	"prime",
-	"range",
-	"sum",
-	"multiply"
+    "prime",
+    "range",
+    "sum",
+    "multiply",
+    "factorial",
+    "largest",
+    "smallest"
   ],
@@ -21,0 +22,0 @@ "repository": {

README.md

@@ -12,5 +12,6 @@ array-math
 	- [aMath.isPrime(n)](https://github.com/ArtskydJ/array-math#amathisprimen)
-	- [aMath.range(n[, m])](https://github.com/ArtskydJ/array-math#amathrangenm)
+	- [aMath.range(n[, m])](https://github.com/ArtskydJ/array-math#amathrangen-m)
 	- [aMath.multiply(a)](https://github.com/ArtskydJ/array-math#amathmultiplya)
 	- [aMath.sum(a)](https://github.com/ArtskydJ/array-math#amathsuma)
+	- [aMath.factorial(h[, l])](https://github.com/ArtskydJ/array-math#amathfactorialh-l)
 - [Example](https://github.com/ArtskydJ/array-math#example)
@@ -58,5 +59,9 @@ - [License](https://github.com/ArtskydJ/array-math#license)
 
+n is a number. If the m parameter was passed in, then n is the low number and m is the high number. If the m parameter was not passed in, then n is the high number. (See examples below.)
+
 	aMath.range(0)     // -> []
-	aMath.range(1)     // -> [1]
+	aMath.range(1)     // -> [0]
 	aMath.range(2)     // -> [0, 1]
+	aMath.range(2, 2)  // -> []
+	aMath.range(2, 3)  // -> [2]
 	aMath.range(3)     // -> [0, 1, 2]
@@ -84,4 +89,25 @@ aMath.range(10)    // -> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
 
+##aMath.factorial(h[, l])
+
+h is a number. It is the high number. It defaults to 0.  
+l is a number. It is the low number. It defaults to 0.  
+While multiplying, it will never multiply by 0.
+
+	aMath.factorial()      // -> 1
+	aMath.factorial(0)     // -> 1
+	aMath.factorial(1)     // -> 1
+	aMath.factorial(2)     // -> 2         (2x1)
+	aMath.factorial(3)     // -> 6         (3x2x1)
+	aMath.factorial(5)     // -> 120       (5x4x3x2x1)
+	aMath.factorial(5, 0)  // -> 120       (5x4x3x2x1)
+	aMath.factorial(5, 1)  // -> 120       (5x4x3x2x1)
+	aMath.factorial(5, 2)  // -> 120       (5x4x3x2)
+	aMath.factorial(5, 3)  // -> 60        (5x4x3)
+	aMath.factorial(5, 4)  // -> 20        (5x4)
+	aMath.factorial(10)    // -> 3628800   (10x9x8x7x6x5x4x3x2x1)
+	aMath.factorial(10, 3) // -> 1814400   (10x9x8x7x6x5x4x3)
+	aMath.factorial(10, 5) // -> 151200    (10x9x8x7x6x5)
+
 ##License
 
 [MIT](http://opensource.org/licenses/MIT)

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Improved metrics

Total package byte prevSize

11350

increased by26.86%

Number of package files

12

increased by9.09%

Lines of code

234

increased by10.38%

Number of lines in readme file

111

increased by30.59%

No dependency changes