leetcode-problemset/leetcode-cn/problem (English)/交换数字(English) [swap-numbers-lcci].html

<p>Write a function to swap a number in place (that is, without temporary variables).</p>

<p><strong>Example: </strong></p>

<pre>
<strong>Input:</strong> numbers = [1,2]
<strong>Output:</strong> [2,1]
</pre>

<p><strong>Note: </strong></p>

<ul>
	<li><code>numbers.length == 2</code></li>
	<li><code>-2147483647 &lt;= numbers[i] &lt;=&nbsp;2147483647</code></li>
</ul>