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/**
* File: max_product_cutting.js
* Created Time: 2023-09-02
* Author: Justin (xiefahit@gmail.com)
*/
/* 最大切分乘积:贪心 */
function maxProductCutting(n) {
// 当 n <= 3 时,必须切分出一个 1
if (n <= 3) {
return 1 * (n - 1);
}
// 贪心地切分出 3 ,a 为 3 的个数,b 为余数
let a = Math.floor(n / 3);
let b = n % 3;
if (b === 1) {
// 当余数为 1 时,将一对 1 * 3 转化为 2 * 2
return Math.pow(3, a - 1) * 2 * 2;
if (b === 2) {
// 当余数为 2 时,不做处理
return Math.pow(3, a) * 2;
// 当余数为 0 时,不做处理
return Math.pow(3, a);
/* Driver Code */
let n = 58;
// 贪心算法
let res = maxProductCutting(n);
console.log(`最大切分乘积为 ${res}`);