Make Two Arrays Equal by Reversing Sub-arrays

Given two integer arrays of equal length target and arr.

In one step, you can select any non-empty sub-array of arr and reverse it. You are allowed to make any number of steps.

Return True if you can make arr equal to target, or False otherwise.

Example 1:

Input: target = [1,2,3,4], arr = [2,4,1,3]
Output: true
Explanation: You can follow the next steps to convert arr to target:
1- Reverse sub-array [2,4,1], arr becomes [1,4,2,3]
2- Reverse sub-array [4,2], arr becomes [1,2,4,3]
3- Reverse sub-array [4,3], arr becomes [1,2,3,4]
There are multiple ways to convert arr to target, this is not the only way to do so.

Example 2:

Input: target = [7], arr = [7]
Output: true
Explanation: arr is equal to target without any reverses.

Example 3:

Input: target = [1,12], arr = [12,1]
Output: true

Example 4:

Input: target = [3,7,9], arr = [3,7,11]
Output: false
Explanation: arr doesn't have value 9 and it can never be converted to target.

Example 5:

Input: target = [1,1,1,1,1], arr = [1,1,1,1,1]
Output: true

Constraints:

• target.length == arr.length

• 1 <= target.length <= 1000

• 1 <= target[i] <= 1000

• 1 <= arr[i] <= 1000

class Solution {
    public boolean canBeEqual(int[] target, int[] arr) {
        int n = arr.length;
        HashMap<Integer, Integer> map = new HashMap<>();
        for (int i = 0; i < n; i++)
            map.put(arr[i], map.getOrDefault(arr[i], 0) + 1);
        for (int i = 0; i < n; i++) {
            if (!map.containsKey(target[i]) || map.get(target[i]) == 0)
                return false;
            map.put(target[i], map.get(target[i]) - 1);
        }
        return true;
    }
}