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# 0768. Max Chunks To Make Sorted II

<https://leetcode.com/problems/max-chunks-to-make-sorted-ii>

## Description

You are given an integer array `arr`.

We split `arr` into some number of **chunks** (i.e., partitions), and individually sort each chunk. After concatenating them, the result should equal the sorted array.

Return *the largest number of chunks we can make to sort the array*.

**Example 1:**

```
**Input:** arr = [5,4,3,2,1]
**Output:** 1
**Explanation:**
Splitting into two or more chunks will not return the required result.
For example, splitting into [5, 4], [3, 2, 1] will result in [4, 5, 1, 2, 3], which isn't sorted.
```

**Example 2:**

```
**Input:** arr = [2,1,3,4,4]
**Output:** 4
**Explanation:**
We can split into two chunks, such as [2, 1], [3, 4, 4].
However, splitting into [2, 1], [3], [4], [4] is the highest number of chunks possible.
```

**Constraints:**

* `1 <= arr.length <= 2000`
* `0 <= arr[i] <= 108`

## ac

```java
```