You are given two positive integer arrays nums1
and nums2
, both of length n
.
The absolute sum difference of arrays nums1
and nums2
is defined as the sum of |nums1[i] - nums2[i]|
for each 0 <= i < n
(0-indexed).
You can replace at most one element of nums1
with any other element in nums1
to minimize the absolute sum difference.
Return the *minimum absolute sum difference after replacing at most one ***element in the array nums1
. Since the answer may be large, return it modulo 109 + 7
.
|x|
is defined as:
x
ifx >= 0
, orx
ifx < 0
.
Example 1:
Input: nums1 = [1,7,5], nums2 = [2,3,5] Output: 3 Explanation:There are two possible optimal solutions: - Replace the second element with the first: [1,7,5] => [1,1,5], or - Replace the second element with the third: [1,7,5] => [1,5,5]. Both will yield an absolute sum difference of|1-2| + (|1-3| or |5-3|) + |5-5| =3.
Example 2:
Input: nums1 = [2,4,6,8,10], nums2 = [2,4,6,8,10] Output: 0 Explanation:nums1 is equal to nums2 so no replacement is needed. This will result in an absolute sum difference of 0.
Example 3:
Input: nums1 = [1,10,4,4,2,7], nums2 = [9,3,5,1,7,4] Output: 20 Explanation:Replace the first element with the second: [1,10,4,4,2,7] => [10,10,4,4,2,7]. This yields an absolute sum difference of|10-9| + |10-3| + |4-5| + |4-1| + |2-7| + |7-4| = 20
Constraints:
n == nums1.length
n == nums2.length
1 <= n <= 10^5
1 <= nums1[i], nums2[i] <= 10^5
给你两个正整数数组 nums1 和 nums2 ,数组的长度都是 n 。数组 nums1 和 nums2 的 绝对差值和 定义为所有 |nums1[i] - nums2[i]|(0 <= i < n)的 总和(下标从 0 开始)。你可以选用 nums1 中的 任意一个 元素来替换 nums1 中的 至多 一个元素,以 最小化 绝对差值和。在替换数组 nums1 中最多一个元素 之后 ,返回最小绝对差值和。因为答案可能很大,所以需要对 10^9 + 7 取余 后返回。
- 如果不改变任何元素,绝对差值和为
- 如果改变一个元素后,那么绝对差值和为
题目要求返回最小绝对差值和,即求
的最大值。暴力枚举 nums1 和 nums2 中两两差值,找到 maxdiff。
package leetcode funcminAbsoluteSumDiff(nums1 []int, nums2 []int) int { diff:=0maxDiff:=0fori, n2:=rangenums2 { d:=abs(nums1[i] -n2) diff+=difmaxDiff<d { t:=100001for_, n1:=rangenums1 { maxDiff=max(maxDiff, d-min(t, abs(n1-n2))) } } } return (diff-maxDiff) % (1e9+7) } funcmax(a, bint) int { ifa>b { returna } returnb } funcabs(aint) int { ifa>0 { returna } return-a } funcmin(a, bint) int { ifa>b { returnb } returna }