minimum-absolute-difference-in-bst

Minimum Absolute Difference in BST

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getMinimumDifference

Given the <code>root</code> of a Binary Search Tree (BST), return the minimum absolute difference between the values of any two different nodes in the tree.

&nbsp;
Example 1:
<img alt="" src="https://assets.leetcode.com/uploads/2021/02/05/bst1.jpg" style="width: 292px; height: 301px;" />
<pre>
Input: root = [4,2,6,1,3]
Output: 1
</pre>

Example 2:
<img alt="" src="https://assets.leetcode.com/uploads/2021/02/05/bst2.jpg" style="width: 282px; height: 301px;" />
<pre>
Input: root = [1,0,48,null,null,12,49]
Output: 1
</pre>

&nbsp;
Constraints:

<ul>
	<li>The number of nodes in the tree is in the range <code>[2, 104]</code>.</li>
	<li><code>0 &lt;= Node.val &lt;= 105</code></li>
</ul>

&nbsp;
Note: This question is the same as 783: <a href="https://leetcode.com/problems/minimum-distance-between-bst-nodes/" target="_blank">https://leetcode.com/problems/minimum-distance-between-bst-nodes/</a>

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