leetcode-problemset/leetcode/originData/minimum-number-of-operations-to-make-string-sorted.json

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            "title": "Minimum Number of Operations to Make String Sorted",
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            "content": "<p>You are given a string <code>s</code> (<strong>0-indexed</strong>)​​​​​​. You are asked to perform the following operation on <code>s</code>​​​​​​ until you get a sorted string:</p>\n\n<ol>\n\t<li>Find <strong>the largest index</strong> <code>i</code> such that <code>1 &lt;= i &lt; s.length</code> and <code>s[i] &lt; s[i - 1]</code>.</li>\n\t<li>Find <strong>the largest index</strong> <code>j</code> such that <code>i &lt;= j &lt; s.length</code> and <code>s[k] &lt; s[i - 1]</code> for all the possible values of <code>k</code> in the range <code>[i, j]</code> inclusive.</li>\n\t<li>Swap the two characters at indices <code>i - 1</code>​​​​ and <code>j</code>​​​​​.</li>\n\t<li>Reverse the suffix starting at index <code>i</code>​​​​​​.</li>\n</ol>\n\n<p>Return <em>the number of operations needed to make the string sorted.</em> Since the answer can be too large, return it <strong>modulo</strong> <code>10<sup>9</sup> + 7</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;cba&quot;\n<strong>Output:</strong> 5\n<strong>Explanation:</strong> The simulation goes as follows:\nOperation 1: i=2, j=2. Swap s[1] and s[2] to get s=&quot;cab&quot;, then reverse the suffix starting at 2. Now, s=&quot;cab&quot;.\nOperation 2: i=1, j=2. Swap s[0] and s[2] to get s=&quot;bac&quot;, then reverse the suffix starting at 1. Now, s=&quot;bca&quot;.\nOperation 3: i=2, j=2. Swap s[1] and s[2] to get s=&quot;bac&quot;, then reverse the suffix starting at 2. Now, s=&quot;bac&quot;.\nOperation 4: i=1, j=1. Swap s[0] and s[1] to get s=&quot;abc&quot;, then reverse the suffix starting at 1. Now, s=&quot;acb&quot;.\nOperation 5: i=2, j=2. Swap s[1] and s[2] to get s=&quot;abc&quot;, then reverse the suffix starting at 2. Now, s=&quot;abc&quot;.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;aabaa&quot;\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> The simulation goes as follows:\nOperation 1: i=3, j=4. Swap s[2] and s[4] to get s=&quot;aaaab&quot;, then reverse the substring starting at 3. Now, s=&quot;aaaba&quot;.\nOperation 2: i=4, j=4. Swap s[3] and s[4] to get s=&quot;aaaab&quot;, then reverse the substring starting at 4. Now, s=&quot;aaaab&quot;.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= s.length &lt;= 3000</code></li>\n\t<li><code>s</code>​​​​​​ consists only of lowercase English letters.</li>\n</ul>\n",
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            "hints": [
                "Note that the operations given describe getting the previous permutation of s",
                "To solve this problem you need to solve every suffix separately"
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