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存量题库数据更新
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@@ -2,7 +2,7 @@
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"question": {
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"questionId": "3190",
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"questionFrontendId": "100117",
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"questionFrontendId": "2934",
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"categoryTitle": "Algorithms",
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"boundTopicId": 2521614,
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"title": "Minimum Operations to Maximize Last Elements in Arrays",
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@@ -12,13 +12,26 @@
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"translatedContent": "<p>给你两个下标从 <strong>0</strong> 开始的整数数组 <code>nums1</code> 和 <code>nums2</code> ,这两个数组的长度都是 <code>n</code> 。</p>\n\n<p>你可以执行一系列<strong> 操作(可能不执行)</strong>。</p>\n\n<p>在每次操作中,你可以选择一个在范围 <code>[0, n - 1]</code> 内的下标 <code>i</code> ,并交换 <code>nums1[i]</code> 和 <code>nums2[i]</code> 的值。</p>\n\n<p>你的任务是找到满足以下条件所需的 <strong>最小</strong> 操作次数:</p>\n\n<ul>\n\t<li><code>nums1[n - 1]</code> 等于 <code>nums1</code> 中所有元素的 <strong>最大值</strong> ,即 <code>nums1[n - 1] = max(nums1[0], nums1[1], ..., nums1[n - 1])</code> 。</li>\n\t<li><code>nums2[n - 1]</code> 等于 <code>nums2</code> 中所有元素的 <strong>最大值</strong> ,即 <code>nums2[n - 1] = max(nums2[0], nums2[1], ..., nums2[n - 1])</code> 。</li>\n</ul>\n\n<p>以整数形式,表示并返回满足上述 <strong>全部</strong> 条件所需的 <strong>最小</strong> 操作次数,如果无法同时满足两个条件,则返回 <code>-1</code> 。</p>\n\n<p> </p>\n\n<p><strong class=\"example\">示例 1:</strong></p>\n\n<pre>\n<strong>输入:</strong>nums1 = [1,2,7],nums2 = [4,5,3]\n<strong>输出:</strong>1\n<strong>解释:</strong>在这个示例中,可以选择下标 i = 2 执行一次操作。\n交换 nums1[2] 和 nums2[2] 的值,nums1 变为 [1,2,3] ,nums2 变为 [4,5,7] 。\n同时满足两个条件。\n可以证明,需要执行的最小操作次数为 1 。\n因此,答案是 1 。\n</pre>\n\n<p><strong class=\"example\">示例 2:</strong></p>\n\n<pre>\n<strong>输入:</strong>nums1 = [2,3,4,5,9],nums2 = [8,8,4,4,4]\n<strong>输出:</strong>2\n<strong>解释:</strong>在这个示例中,可以执行以下操作:\n首先,选择下标 i = 4 执行操作。\n交换 nums1[4] 和 nums2[4] 的值,nums1 变为 [2,3,4,5,4] ,nums2 变为 [8,8,4,4,9] 。\n然后,选择下标 i = 3 执行操作。\n交换 nums1[3] 和 nums2[3] 的值,nums1 变为 [2,3,4,4,4] ,nums2 变为 [8,8,4,5,9] 。\n同时满足两个条件。 \n可以证明,需要执行的最小操作次数为 2 。 \n因此,答案是 2 。\n</pre>\n\n<p><strong class=\"example\">示例 3:</strong></p>\n\n<pre>\n<strong>输入:</strong>nums1 = [1,5,4],nums2 = [2,5,3]\n<strong>输出:</strong>-1\n<strong>解释:</strong>在这个示例中,无法同时满足两个条件。\n因此,答案是 -1 。\n</pre>\n\n<p> </p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>1 <= n == nums1.length == nums2.length <= 1000</code></li>\n\t<li><code>1 <= nums1[i] <= 10<sup>9</sup></code></li>\n\t<li><code>1 <= nums2[i] <= 10<sup>9</sup></code></li>\n</ul>\n",
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"difficulty": "Medium",
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"similarQuestions": "[]",
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{
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"name": "Greedy",
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"slug": "greedy",
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"translatedName": "贪心",
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{
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"name": "Array",
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"translatedName": "数组",
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@@ -136,7 +149,7 @@
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"hints": [
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"Consider how to calculate the minimum number of operations when <code>nums1[n - 1]</code> and <code>nums2[n - 1]</code> are fixed (they are not swapped).",
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"For each index <code>i</code>, there are only <code>3</code> possibilities: <ul>\r\n<li><code>nums1[i] <= nums1[n - 1] && nums2[i] <= nums2[n - 1]</code>. We don't need to swap them.</li>\r\n<li><code>nums1[i] <= nums2[n - 1] && nums2[i] <= nums1[n - 1]</code>. We have to swap them.</li>\r\n<li>Otherwise, there is no solution.</li>\r\n</ul>",
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