leetcode-problemset/leetcode-cn/originData/minimum-number-of-food-buckets-to-feed-the-hamsters.json

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            "questionId": "2191",
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            "title": "Minimum Number of Food Buckets to Feed the Hamsters",
            "titleSlug": "minimum-number-of-food-buckets-to-feed-the-hamsters",
            "content": "<p>You are given a <strong>0-indexed</strong> string <code>hamsters</code> where <code>hamsters[i]</code> is either:</p>\n\n<ul>\n\t<li><code>&#39;H&#39;</code> indicating that there is a hamster at index <code>i</code>, or</li>\n\t<li><code>&#39;.&#39;</code> indicating that index <code>i</code> is empty.</li>\n</ul>\n\n<p>You will add some number of food buckets at the empty indices in order to feed the hamsters. A hamster can be fed if there is at least one food bucket to its left or to its right. More formally, a hamster at index <code>i</code> can be fed if you place a food bucket at index <code>i - 1</code> <strong>and/or</strong> at index <code>i + 1</code>.</p>\n\n<p>Return <em>the minimum number of food buckets you should <strong>place at empty indices</strong> to feed all the hamsters or </em><code>-1</code><em> if it is impossible to feed all of them</em>.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2022/11/01/example1.png\" style=\"width: 482px; height: 162px;\" />\n<pre>\n<strong>Input:</strong> hamsters = &quot;H..H&quot;\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> We place two food buckets at indices 1 and 2.\nIt can be shown that if we place only one food bucket, one of the hamsters will not be fed.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2022/11/01/example2.png\" style=\"width: 602px; height: 162px;\" />\n<pre>\n<strong>Input:</strong> hamsters = &quot;.H.H.&quot;\n<strong>Output:</strong> 1\n<strong>Explanation:</strong> We place one food bucket at index 2.\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2022/11/01/example3.png\" style=\"width: 602px; height: 162px;\" />\n<pre>\n<strong>Input:</strong> hamsters = &quot;.HHH.&quot;\n<strong>Output:</strong> -1\n<strong>Explanation:</strong> If we place a food bucket at every empty index as shown, the hamster at index 2 will not be able to eat.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= hamsters.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>hamsters[i]</code> is either<code>&#39;H&#39;</code> or <code>&#39;.&#39;</code>.</li>\n</ul>\n",
            "translatedTitle": "喂食仓鼠的最小食物桶数",
            "translatedContent": "<p>给你一个下标从 <strong>0</strong>&nbsp;开始的字符串&nbsp;<code>hamsters</code>&nbsp;，其中&nbsp;<code>hamsters[i]</code>&nbsp; 要么是：</p>\n\n<ul>\n\t<li><code>'H'</code>&nbsp;表示有一个仓鼠在下标&nbsp;<code>i</code>&nbsp;，或者</li>\n\t<li><code>'.'</code>&nbsp;表示下标&nbsp;<code>i</code>&nbsp;是空的。</li>\n</ul>\n\n<p>你将要在空的位置上添加一定数量的食物桶来喂养仓鼠。如果仓鼠的左边或右边至少有一个食物桶，就可以喂食它。更正式地说，如果你在位置&nbsp;<code>i - 1</code>&nbsp;<strong>或者</strong> <code>i + 1</code>&nbsp;放置一个食物桶，就可以喂养位置为 <code>i</code>&nbsp;处的仓鼠。</p>\n\n<p>在 <strong>空的位置</strong> 放置食物桶以喂养所有仓鼠的前提下，请你返回需要的 <strong>最少</strong>&nbsp;食物桶数。如果无解请返回 <code>-1</code>&nbsp;。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://pic.leetcode.cn/1710141378-bfEGUX-image.png\" style=\"width: 482px; height: 162px;\" /></strong></p>\n\n<pre>\n<b>输入：</b>hamsters = \"H..H\"\n<b>输出：</b>2\n<strong>解释：</strong>\n我们可以在下标为 1 和 2 处放食物桶。\n可以发现如果我们只放置 1 个食物桶，其中一只仓鼠将得不到喂养。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://pic.leetcode.cn/1710141384-oLAScv-image.png\" style=\"width: 602px; height: 162px;\" /></strong></p>\n\n<pre>\n<b>输入：</b>street = \".H.H.\"\n<b>输出：</b>1\n<strong>解释：</strong>\n我们可以在下标为 2 处放置一个食物桶。\n</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<pre>\n<b>输入：</b>street = \".HHH.\"\n<b>输出：</b>-1\n<strong>解释：</strong>\n如果我们如图那样在每个空位放置食物桶，下标 2 处的仓鼠将吃不到食物。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= hamsters.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>hamsters[i]</code>&nbsp;要么是&nbsp;<code>'H'</code>&nbsp;，要么是&nbsp;<code>'.'</code> 。</li>\n</ul>\n",
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                "When is it impossible to feed all the hamsters?",
                "When one or more hamsters do not have an empty space adjacent to it.",
                "Assuming all previous hamsters are fed. If there is a hamster at index i and you are able to place a bucket at index i - 1 or i + 1, where should you put it?",
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