原文链接: https://leetcode-cn.com/problems/maximum-product-difference-between-two-pairs
英文原文
The product difference between two pairs (a, b)
and (c, d)
is defined as (a * b) - (c * d)
.
- For example, the product difference between
(5, 6)
and(2, 7)
is(5 * 6) - (2 * 7) = 16
.
Given an integer array nums
, choose four distinct indices w
, x
, y
, and z
such that the product difference between pairs (nums[w], nums[x])
and (nums[y], nums[z])
is maximized.
Return the maximum such product difference.
Example 1:
Input: nums = [5,6,2,7,4] Output: 34 Explanation: We can choose indices 1 and 3 for the first pair (6, 7) and indices 2 and 4 for the second pair (2, 4). The product difference is (6 * 7) - (2 * 4) = 34.
Example 2:
Input: nums = [4,2,5,9,7,4,8] Output: 64 Explanation: We can choose indices 3 and 6 for the first pair (9, 8) and indices 1 and 5 for the second pair (2, 4). The product difference is (9 * 8) - (2 * 4) = 64.
Constraints:
4 <= nums.length <= 104
1 <= nums[i] <= 104
中文题目
两个数对 (a, b)
和 (c, d)
之间的 乘积差 定义为 (a * b) - (c * d)
。
- 例如,
(5, 6)
和(2, 7)
之间的乘积差是(5 * 6) - (2 * 7) = 16
。
给你一个整数数组 nums
,选出四个 不同的 下标 w
、x
、y
和 z
,使数对 (nums[w], nums[x])
和 (nums[y], nums[z])
之间的 乘积差 取到 最大值 。
返回以这种方式取得的乘积差中的 最大值 。
示例 1:
输入:nums = [5,6,2,7,4] 输出:34 解释:可以选出下标为 1 和 3 的元素构成第一个数对 (6, 7) 以及下标 2 和 4 构成第二个数对 (2, 4) 乘积差是 (6 * 7) - (2 * 4) = 34
示例 2:
输入:nums = [4,2,5,9,7,4,8] 输出:64 解释:可以选出下标为 3 和 6 的元素构成第一个数对 (9, 8) 以及下标 1 和 5 构成第二个数对 (2, 4) 乘积差是 (9 * 8) - (2 * 4) = 64
提示:
4 <= nums.length <= 104
1 <= nums[i] <= 104
通过代码
高赞题解
func maxProductDifference(a []int) int {
sort.Ints(a)
n := len(a)
return a[n-1]*a[n-2] - a[0]*a[1]
}
统计信息
通过次数 | 提交次数 | AC比率 |
---|---|---|
9242 | 11106 | 83.2% |
提交历史
提交时间 | 提交结果 | 执行时间 | 内存消耗 | 语言 |
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