You are given an integer array nums.

A mirror pair is a pair of indices (i, j) such that:

Return the minimum absolute distance between the indices of any mirror pair. The absolute distance between indices i and j is abs(i - j).

If no mirror pair exists, return -1.

 

Example 1:

Input: nums = [12,21,45,33,54]

Output: 1

Explanation:

The mirror pairs are:

The minimum absolute distance among all pairs is 1.

Example 2:

Input: nums = [120,21]

Output: 1

Explanation:

There is only one mirror pair (0, 1) since reverse(nums[0]) = reverse(120) = 21 = nums[1].

The minimum absolute distance is 1.

Example 3:

Input: nums = [21,120]

Output: -1

Explanation:

There are no mirror pairs in the array.

 

Constraints: