leetcode-problemset/leetcode-cn/originData/number-of-good-pairs.json

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            "title": "Number of Good Pairs",
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            "content": "<p>Given an array of integers <code>nums</code>, return <em>the number of <strong>good pairs</strong></em>.</p>\n\n<p>A pair <code>(i, j)</code> is called <em>good</em> if <code>nums[i] == nums[j]</code> and <code>i</code> &lt; <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> nums = [1,2,3,1,1,3]\n<strong>Output:</strong> 4\n<strong>Explanation:</strong> There are 4 good pairs (0,3), (0,4), (3,4), (2,5) 0-indexed.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [1,1,1,1]\n<strong>Output:</strong> 6\n<strong>Explanation:</strong> Each pair in the array are <em>good</em>.\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [1,2,3]\n<strong>Output:</strong> 0\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;= 100</code></li>\n\t<li><code>1 &lt;= nums[i] &lt;= 100</code></li>\n</ul>\n",
            "translatedTitle": "好数对的数目",
            "translatedContent": "<p>给你一个整数数组 <code>nums</code> 。</p>\n\n<p>如果一组数字 <code>(i,j)</code> 满足 <code>nums[i]</code> == <code>nums[j]</code> 且 <code>i</code> &lt; <code>j</code> ，就可以认为这是一组 <strong>好数对</strong> 。</p>\n\n<p>返回好数对的数目。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre><strong>输入：</strong>nums = [1,2,3,1,1,3]\n<strong>输出：</strong>4\n<strong>解释：</strong>有 4 组好数对，分别是 (0,3), (0,4), (3,4), (2,5) ，下标从 0 开始\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre><strong>输入：</strong>nums = [1,1,1,1]\n<strong>输出：</strong>6\n<strong>解释：</strong>数组中的每组数字都是好数对</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<pre><strong>输入：</strong>nums = [1,2,3]\n<strong>输出：</strong>0\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;= 100</code></li>\n\t<li><code>1 &lt;= nums[i] &lt;= 100</code></li>\n</ul>\n",
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