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1633-minimum-number-of-increments-on-subarrays-to-form-a-target-array/README.md

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+<h2><a href="https://leetcode.com/problems/minimum-number-of-increments-on-subarrays-to-form-a-target-array">1633. Minimum Number of Increments on Subarrays to Form a Target Array</a></h2><h3>Hard</h3><hr><p>You are given an integer array <code>target</code>. You have an integer array <code>initial</code> of the same size as <code>target</code> with all elements initially zeros.</p>
+
+<p>In one operation you can choose <strong>any</strong> subarray from <code>initial</code> and increment each value by one.</p>
+
+<p>Return <em>the minimum number of operations to form a </em><code>target</code><em> array from </em><code>initial</code>.</p>
+
+<p>The test cases are generated so that the answer fits in a 32-bit integer.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<pre>
+<strong>Input:</strong> target = [1,2,3,2,1]
+<strong>Output:</strong> 3
+<strong>Explanation:</strong> We need at least 3 operations to form the target array from the initial array.
+[<strong><u>0,0,0,0,0</u></strong>] increment 1 from index 0 to 4 (inclusive).
+[1,<strong><u>1,1,1</u></strong>,1] increment 1 from index 1 to 3 (inclusive).
+[1,2,<strong><u>2</u></strong>,2,1] increment 1 at index 2.
+[1,2,3,2,1] target array is formed.
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<pre>
+<strong>Input:</strong> target = [3,1,1,2]
+<strong>Output:</strong> 4
+<strong>Explanation:</strong> [<strong><u>0,0,0,0</u></strong>] -&gt; [1,1,1,<strong><u>1</u></strong>] -&gt; [<strong><u>1</u></strong>,1,1,2] -&gt; [<strong><u>2</u></strong>,1,1,2] -&gt; [3,1,1,2]
+</pre>
+
+<p><strong class="example">Example 3:</strong></p>
+
+<pre>
+<strong>Input:</strong> target = [3,1,5,4,2]
+<strong>Output:</strong> 7
+<strong>Explanation:</strong> [<strong><u>0,0,0,0,0</u></strong>] -&gt; [<strong><u>1</u></strong>,1,1,1,1] -&gt; [<strong><u>2</u></strong>,1,1,1,1] -&gt; [3,1,<strong><u>1,1,1</u></strong>] -&gt; [3,1,<strong><u>2,2</u></strong>,2] -&gt; [3,1,<strong><u>3,3</u></strong>,2] -&gt; [3,1,<strong><u>4</u></strong>,4,2] -&gt; [3,1,5,4,2].
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= target.length &lt;= 10<sup>5</sup></code></li>
+	<li><code>1 &lt;= target[i] &lt;= 10<sup>5</sup></code></li>
+</ul>