LeetCode 0343 - Integer Break

2021-08-11 11:19:54 浏览数 (1)

Integer Break

Desicription

Given a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integers. Return the maximum product you can get.

Example 1:

代码语言:javascript复制
Input: 2
Output: 1
Explanation: 2 = 1   1, 1 × 1 = 1.

Example 2:

代码语言:javascript复制
Input: 10
Output: 36
Explanation: 10 = 3   3   4, 3 × 3 × 4 = 36.

Note: You may assume that n is not less than 2 and not larger than 58.

Solution

代码语言:javascript复制
class Solution {
public:
    int integerBreak(int n) {
        if(n == 2) {
            return 1;
        } else if(n == 3) {
            return 2;
        }

        int res = 1;
        while(n > 4) {
            res *= 3;
            n -= 3;
        }
        return n * res;
    }
};

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