UNPKG

mathjs/src/function/probability/product.js

Version:

332 BJavaScriptView Raw

1/** @param {integer} i
*  @param {integer} n
*  @returns : product of i to n
*/
5function product (i, n) {
let half
if (n < i) {
  return 1
}
if (n === i) {
  return n
}
half = (n + i) >> 1 // divide (n + i) by 2 and truncate to integer
return product(i, half) * product(half + 1, n)
15}
16
17module.exports = product

1	`/** @param {integer} i`
2	`* @param {integer} n`
3	`* @returns : product of i to n`
4	`*/`
5	`function product (i, n) {`
6	`let half`
7	`if (n < i) {`
8	`return 1`
9	`}`
10	`if (n === i) {`
11	`return n`
12	`}`
13	`half = (n + i) >> 1 // divide (n + i) by 2 and truncate to integer`
14	`return product(i, half) * product(half + 1, n)`
15	`}`
16
17	`module.exports = product`