leetcode-problemset/leetcode-cn/problem (English)/偶数的按位或运算(English) [bitwise-or-of-even-numbers-in-an-array].html

<p>You are given an integer array <code>nums</code>.</p>

<p>Return the bitwise <strong>OR</strong> of all <strong>even</strong> numbers in the array.</p>

<p>If there are no even numbers in <code>nums</code>, return 0.</p>

<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>

<div class="example-block">
<p><strong>Input:</strong> <span class="example-io">nums = [1,2,3,4,5,6]</span></p>

<p><strong>Output:</strong> <span class="example-io">6</span></p>

<p><strong>Explanation:</strong></p>

<p>The even numbers are 2, 4, and 6. Their bitwise OR equals 6.</p>
</div>

<p><strong class="example">Example 2:</strong></p>

<div class="example-block">
<p><strong>Input:</strong> <span class="example-io">nums = [7,9,11]</span></p>

<p><strong>Output:</strong> <span class="example-io">0</span></p>

<p><strong>Explanation:</strong></p>

<p>There are no even numbers, so the result is 0.</p>
</div>

<p><strong class="example">Example 3:</strong></p>

<div class="example-block">
<p><strong>Input:</strong> <span class="example-io">nums = [1,8,16]</span></p>

<p><strong>Output:</strong> <span class="example-io">24</span></p>

<p><strong>Explanation:</strong></p>

<p>The even numbers are 8 and 16. Their bitwise OR equals 24.</p>
</div>

<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>1 &lt;= nums.length &lt;= 100</code></li>
	<li><code>1 &lt;= nums[i] &lt;= 100</code></li>
</ul>