leetcode-problemset/leetcode/originData/minimum-penalty-for-a-shop.json

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            "title": "Minimum Penalty for a Shop",
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            "content": "<p>You are given the customer visit log of a shop represented by a <strong>0-indexed</strong> string <code>customers</code> consisting only of characters <code>&#39;N&#39;</code> and <code>&#39;Y&#39;</code>:</p>\n\n<ul>\n\t<li>if the <code>i<sup>th</sup></code> character is <code>&#39;Y&#39;</code>, it means that customers come at the <code>i<sup>th</sup></code> hour</li>\n\t<li>whereas <code>&#39;N&#39;</code> indicates that no customers come at the <code>i<sup>th</sup></code> hour.</li>\n</ul>\n\n<p>If the shop closes at the <code>j<sup>th</sup></code> hour (<code>0 &lt;= j &lt;= n</code>), the <strong>penalty</strong> is calculated as follows:</p>\n\n<ul>\n\t<li>For every hour when the shop is open and no customers come, the penalty increases by <code>1</code>.</li>\n\t<li>For every hour when the shop is closed and customers come, the penalty increases by <code>1</code>.</li>\n</ul>\n\n<p>Return<em> the <strong>earliest</strong> hour at which the shop must be closed to incur a <strong>minimum</strong> penalty.</em></p>\n\n<p><strong>Note</strong> that if a shop closes at the <code>j<sup>th</sup></code> hour, it means the shop is closed at the hour <code>j</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> customers = &quot;YYNY&quot;\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> \n- Closing the shop at the 0<sup>th</sup> hour incurs in 1+1+0+1 = 3 penalty.\n- Closing the shop at the 1<sup>st</sup> hour incurs in 0+1+0+1 = 2 penalty.\n- Closing the shop at the 2<sup>nd</sup> hour incurs in 0+0+0+1 = 1 penalty.\n- Closing the shop at the 3<sup>rd</sup> hour incurs in 0+0+1+1 = 2 penalty.\n- Closing the shop at the 4<sup>th</sup> hour incurs in 0+0+1+0 = 1 penalty.\nClosing the shop at 2<sup>nd</sup> or 4<sup>th</sup> hour gives a minimum penalty. Since 2 is earlier, the optimal closing time is 2.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> customers = &quot;NNNNN&quot;\n<strong>Output:</strong> 0\n<strong>Explanation:</strong> It is best to close the shop at the 0<sup>th</sup> hour as no customers arrive.</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> customers = &quot;YYYY&quot;\n<strong>Output:</strong> 4\n<strong>Explanation:</strong> It is best to close the shop at the 4<sup>th</sup> hour as customers arrive at each hour.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= customers.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>customers</code> consists only of characters <code>&#39;Y&#39;</code> and <code>&#39;N&#39;</code>.</li>\n</ul>\n",
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                "At any index, the penalty is the sum of prefix count of ‘N’ and suffix count of ‘Y’.",
                "Enumerate all indices and find the minimum such value."
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