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@@ -12,7 +12,7 @@
"translatedContent": "<p>给你一个仅由数字 6 和 9 组成的正整数&nbsp;<code>num</code>。</p>\n\n<p>你最多只能翻转一位数字,将 6 变成&nbsp;9或者把&nbsp;9 变成&nbsp;6 。</p>\n\n<p>请返回你可以得到的最大数字。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1</strong></p>\n\n<pre><strong>输入:</strong>num = 9669\n<strong>输出:</strong>9969\n<strong>解释:</strong>\n改变第一位数字可以得到 6669 。\n改变第二位数字可以得到 9969 。\n改变第三位数字可以得到 9699 。\n改变第四位数字可以得到 9666 。\n其中最大的数字是 9969 。\n</pre>\n\n<p><strong>示例 2</strong></p>\n\n<pre><strong>输入:</strong>num = 9996\n<strong>输出:</strong>9999\n<strong>解释:</strong>将最后一位从 6 变到 9其结果 9999 是最大的数。</pre>\n\n<p><strong>示例 3</strong></p>\n\n<pre><strong>输入:</strong>num = 9999\n<strong>输出:</strong>9999\n<strong>解释:</strong>无需改变就已经是最大的数字了。</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= num &lt;= 10^4</code></li>\n\t<li><code>num</code>&nbsp;每一位上的数字都是 6 或者&nbsp;9 。</li>\n</ul>\n",
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"difficulty": "Easy",
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"similarQuestions": "[]",
@@ -143,7 +143,7 @@
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"hints": [
"Convert the number in an array of its digits.",
"Brute force on every digit to get the maximum number."