leetcode-problemset/leetcode-cn/originData/contains-duplicate.json

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            "questionId": "217",
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            "categoryTitle": "Algorithms",
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            "title": "Contains Duplicate",
            "titleSlug": "contains-duplicate",
            "content": "<p>Given an integer array <code>nums</code>, return <code>true</code> if any value appears <strong>at least twice</strong> in the array, and return <code>false</code> if every element is distinct.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">nums = [1,2,3,1]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">true</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>The element 1 occurs at the indices 0 and 3.</p>\n</div>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">nums = [1,2,3,4]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">false</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>All elements are distinct.</p>\n</div>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">nums = [1,1,1,3,3,4,3,2,4,2]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">true</span></p>\n</div>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= nums.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>-10<sup>9</sup> &lt;= nums[i] &lt;= 10<sup>9</sup></code></li>\n</ul>\n",
            "translatedTitle": "存在重复元素",
            "translatedContent": "给你一个整数数组 <code>nums</code> 。如果任一值在数组中出现 <strong>至少两次</strong> ，返回 <code>true</code> ；如果数组中每个元素互不相同，返回 <code>false</code> 。\n<p>&nbsp;</p>\n\n<p><strong class=\"example\">示例 1：</strong></p>\n\n<div class=\"example-block\">\n<p><span class=\"example-io\"><b>输入：</b>nums = [1,2,3,1]</span></p>\n\n<p><span class=\"example-io\"><b>输出：</b>true</span></p>\n\n<p><strong>解释：</strong></p>\n\n<p>元素 1 在下标 0 和 3 出现。</p>\n</div>\n\n<p><strong class=\"example\">示例 2：</strong></p>\n\n<div class=\"example-block\">\n<p><span class=\"example-io\"><b>输入：</b>nums = [1,2,3,4]</span></p>\n\n<p><span class=\"example-io\"><b>输出：</b>false</span></p>\n\n<p><strong>解释：</strong></p>\n\n<p>所有元素都不同。</p>\n</div>\n\n<p><strong class=\"example\">示例 3：</strong></p>\n\n<div class=\"example-block\">\n<p><span class=\"example-io\"><b>输入：</b>nums = [1,1,1,3,3,4,3,2,4,2]</span></p>\n\n<p><span class=\"example-io\"><b>输出：</b>true</span></p>\n</div>\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;= 10<sup>5</sup></code></li>\n\t<li><code>-10<sup>9</sup> &lt;= nums[i] &lt;= 10<sup>9</sup></code></li>\n</ul>\n",
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