leetcode-problemset/leetcode-cn/originData/find-all-k-distant-indices-in-an-array.json

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            "questionId": "2320",
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            "categoryTitle": "Algorithms",
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            "title": "Find All K-Distant Indices in an Array",
            "titleSlug": "find-all-k-distant-indices-in-an-array",
            "content": "<p>You are given a <strong>0-indexed</strong> integer array <code>nums</code> and two integers <code>key</code> and <code>k</code>. A <strong>k-distant index</strong> is an index <code>i</code> of <code>nums</code> for which there exists at least one index <code>j</code> such that <code>|i - j| &lt;= k</code> and <code>nums[j] == key</code>.</p>\n\n<p>Return <em>a list of all k-distant indices sorted in <strong>increasing order</strong></em>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [3,4,9,1,3,9,5], key = 9, k = 1\n<strong>Output:</strong> [1,2,3,4,5,6]\n<strong>Explanation:</strong> Here, <code>nums[2] == key</code> and <code>nums[5] == key.\n- For index 0, |0 - 2| &gt; k and |0 - 5| &gt; k, so there is no j</code> where <code>|0 - j| &lt;= k</code> and <code>nums[j] == key. Thus, 0 is not a k-distant index.\n- For index 1, |1 - 2| &lt;= k and nums[2] == key, so 1 is a k-distant index.\n- For index 2, |2 - 2| &lt;= k and nums[2] == key, so 2 is a k-distant index.\n- For index 3, |3 - 2| &lt;= k and nums[2] == key, so 3 is a k-distant index.\n- For index 4, |4 - 5| &lt;= k and nums[5] == key, so 4 is a k-distant index.\n- For index 5, |5 - 5| &lt;= k and nums[5] == key, so 5 is a k-distant index.\n- For index 6, |6 - 5| &lt;= k and nums[5] == key, so 6 is a k-distant index.\n</code>Thus, we return [1,2,3,4,5,6] which is sorted in increasing order. \n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [2,2,2,2,2], key = 2, k = 2\n<strong>Output:</strong> [0,1,2,3,4]\n<strong>Explanation:</strong> For all indices i in nums, there exists some index j such that |i - j| &lt;= k and nums[j] == key, so every index is a k-distant index. \nHence, we return [0,1,2,3,4].\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= nums.length &lt;= 1000</code></li>\n\t<li><code>1 &lt;= nums[i] &lt;= 1000</code></li>\n\t<li><code>key</code> is an integer from the array <code>nums</code>.</li>\n\t<li><code>1 &lt;= k &lt;= nums.length</code></li>\n</ul>\n",
            "translatedTitle": "找出数组中的所有 K 近邻下标",
            "translatedContent": "<p>给你一个下标从 <strong>0</strong> 开始的整数数组 <code>nums</code> 和两个整数 <code>key</code> 和 <code>k</code> 。<strong>K 近邻下标</strong> 是 <code>nums</code> 中的一个下标 <code>i</code> ，并满足至少存在一个下标 <code>j</code> 使得 <code>|i - j| &lt;= k</code> 且 <code>nums[j] == key</code> 。</p>\n\n<p>以列表形式返回按 <strong>递增顺序</strong> 排序的所有 K 近邻下标。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>nums = [3,4,9,1,3,9,5], key = 9, k = 1\n<strong>输出：</strong>[1,2,3,4,5,6]\n<strong>解释：</strong>因此，<code>nums[2] == key</code> 且 <code>nums[5] == key 。\n- 对下标 0 ，|0 - 2| &gt; k 且 |0 - 5| &gt; k ，所以不存在 j</code> 使得 <code>|0 - j| &lt;= k</code> 且 <code>nums[j] == key 。所以 0 不是一个 K 近邻下标。\n- 对下标 1 ，|1 - 2| &lt;= k 且 nums[2] == key ，所以 1 是一个 K 近邻下标。\n- 对下标 2 ，|2 - 2| &lt;= k 且 nums[2] == key ，所以 2 是一个 K 近邻下标。\n- 对下标 3 ，|3 - 2| &lt;= k 且 nums[2] == key ，所以 3 是一个 K 近邻下标。\n- 对下标 4 ，|4 - 5| &lt;= k 且 nums[5] == key ，所以 4 是一个 K 近邻下标。\n- 对下标 5 ，|5 - 5| &lt;= k 且 nums[5] == key ，所以 5 是一个 K 近邻下标。\n- 对下标 6 ，|6 - 5| &lt;= k 且 nums[5] == key ，所以 6 是一个 K 近邻下标。\n</code>因此，按递增顺序返回 [1,2,3,4,5,6] 。 \n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>nums = [2,2,2,2,2], key = 2, k = 2\n<strong>输出：</strong>[0,1,2,3,4]\n<strong>解释：</strong>对 nums 的所有下标 i ，总存在某个下标 j 使得 |i - j| &lt;= k 且 nums[j] == key ，所以每个下标都是一个 <code>K 近邻下标。</code> \n因此，返回 [0,1,2,3,4] 。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= nums.length &lt;= 1000</code></li>\n\t<li><code>1 &lt;= nums[i] &lt;= 1000</code></li>\n\t<li><code>key</code> 是数组 <code>nums</code> 中的一个整数</li>\n\t<li><code>1 &lt;= k &lt;= nums.length</code></li>\n</ul>\n",
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