mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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173 lines
17 KiB
JSON
173 lines
17 KiB
JSON
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"questionId": "3676",
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"title": "Smallest Number With All Set Bits",
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"content": "<p>You are given a <em>positive</em> number <code>n</code>.</p>\n\n<p>Return the <strong>smallest</strong> number <code>x</code> <strong>greater than</strong> or <strong>equal to</strong> <code>n</code>, such that the binary representation of <code>x</code> contains only <span data-keyword=\"set-bit\">set bits</span></p>\n\n<p> </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\">n = 5</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">7</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>The binary representation of 7 is <code>"111"</code>.</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\">n = 10</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">15</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>The binary representation of 15 is <code>"1111"</code>.</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\">n = 3</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">3</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>The binary representation of 3 is <code>"11"</code>.</p>\n</div>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= n <= 1000</code></li>\n</ul>\n",
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"difficulty": "Easy",
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"Find the strictly greater power of 2, and subtract 1 from it."
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