> For the complete documentation index, see [llms.txt](https://dfine.gitbook.io/leetcode/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dfine.gitbook.io/leetcode/628.maximum_product_of_three_numbers.md).

# 628.Maximum Product of Three Numbers

**628.Maximum Product of Three Numbers**

难度:Easy

> 给定一个整型数组，在数组中找出由三个数组成的最大乘积，并输出这个乘积。

```
示例 1:

输入: [1,2,3]
输出: 6
示例 2:

输入: [1,2,3,4]
输出: 24
注意:

给定的整型数组长度范围是[3,104]，数组中所有的元素范围是[-1000, 1000]。
输入的数组中任意三个数的乘积不会超出32位有符号整数的范围。
```

最直观的方法，直接排序，找出绝对值最大的即可。时间复杂度是O(nlogn)。

```
class Solution {
public:
    int maximumProduct(vector<int>& nums) {
        sort(nums.begin(),nums.end());
        return max(nums[0]*nums[1]*nums[nums.size()-1], nums[nums.size()-1]*nums[nums.size()-2]*nums[nums.size()-3]);
    }
};
```

> 执行用时 :128 ms, 在所有 C++ 提交中击败了13.28%的用户\
> 内存消耗 :10.7 MB, 在所有 C++ 提交中击败了92.19%的用户


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