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leetcode-problemset/leetcode-cn/originData/1nzheng-shu-zhong-1chu-xian-de-ci-shu-lcof.json
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"questionId": "100309",
"questionFrontendId": "剑指 Offer 43",
"categoryTitle": "LCOF",
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"title": "1n整数中1出现的次数 LCOF",
"titleSlug": "1nzheng-shu-zhong-1chu-xian-de-ci-shu-lcof",
"content": "English description is not available for the problem. Please switch to Chinese.",
"translatedTitle": "1n 整数中 1 出现的次数",
"translatedContent": "<p>输入一个整数 <code>n</code> 求1n这n个整数的十进制表示中1出现的次数。</p>\n\n<p>例如输入12112这些整数中包含1 的数字有1、10、11和121一共出现了5次。</p>\n\n<p> </p>\n\n<p><strong>示例 1</strong></p>\n\n<pre>\n<strong>输入:</strong>n = 12\n<strong>输出:</strong>5\n</pre>\n\n<p><strong>示例 2</strong></p>\n\n<pre>\n<strong>输入:</strong>n = 13\n<strong>输出:</strong>6</pre>\n\n<p> </p>\n\n<p><strong>限制:</strong></p>\n\n<ul>\n\t<li><code>1 <= n < 2^31</code></li>\n</ul>\n\n<p>注意:本题与主站 233 题相同:<a href=\"https://leetcode-cn.com/problems/number-of-digit-one/\">https://leetcode-cn.com/problems/number-of-digit-one/</a></p>\n",
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