# 1200. Minimum Absolute Difference

https://leetcode.com/problems/minimum-absolute-difference

## Description

Given an array of **distinct** integers `arr`, find all pairs of elements with the minimum absolute difference of any two elements.&#x20;

Return a list of pairs in ascending order(with respect to pairs), each pair `[a, b]` follows

* `a, b` are from `arr`
* `a < b`
* `b - a` equals to the minimum absolute difference of any two elements in `arr`

**Example 1:**

```
**Input:** arr = [4,2,1,3]
**Output:** [[1,2],[2,3],[3,4]]
**Explanation:** The minimum absolute difference is 1. List all pairs with difference equal to 1 in ascending order.
```

**Example 2:**

```
**Input:** arr = [1,3,6,10,15]
**Output:** [[1,3]]
```

**Example 3:**

```
**Input:** arr = [3,8,-10,23,19,-4,-14,27]
**Output:** [[-14,-10],[19,23],[23,27]]
```

**Constraints:**

* `2 <= arr.length <= 10^5`
* `-10^6 <= arr[i] <= 10^6`

## ac

```java
```
