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leetcode-problemset/leetcode-cn/problem (Chinese)/不含连续1的非负整数 [non-negative-integers-without-consecutive-ones].html

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2022-03-27 20:46:41 +08:00
<p>给定一个正整数 <code>n</code>&nbsp;,返回范围在&nbsp;<code>[0, n]</code>&nbsp;都非负整数中,其二进制表示不包含&nbsp;<strong>连续的 1&nbsp;</strong>的个数。</p>
<p>&nbsp;</p>
<p><strong>示例 1:</strong></p>
<pre>
<strong>输入:</strong> n = 5
<strong>输出:</strong> 5
<strong>解释:</strong>
下面是带有相应二进制表示的非负整数&lt;= 5
0 : 0
1 : 1
2 : 10
3 : 11
4 : 100
5 : 101
其中只有整数3违反规则有两个连续的1其他5个满足规则。</pre>
<p><strong>示例 2:</strong></p>
<pre>
<strong>输入:</strong> n = 1
<strong>输出:</strong> 2
</pre>
<p><strong>示例 3:</strong></p>
<pre>
<strong>输入:</strong> n = 2
<strong>输出:</strong> 3
</pre>
<p>&nbsp;</p>
<p><strong>提示:</strong></p>
<ul>
<li><code>1 &lt;= n &lt;= 10<sup>9</sup></code></li>
</ul>