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38 lines
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38 lines
1.6 KiB
HTML
<p>The <strong>XOR sum</strong> of a list is the bitwise <code>XOR</code> of all its elements. If the list only contains one element, then its <strong>XOR sum</strong> will be equal to this element.</p>
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<ul>
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<li>For example, the <strong>XOR sum</strong> of <code>[1,2,3,4]</code> is equal to <code>1 XOR 2 XOR 3 XOR 4 = 4</code>, and the <strong>XOR sum</strong> of <code>[3]</code> is equal to <code>3</code>.</li>
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</ul>
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<p>You are given two <strong>0-indexed</strong> arrays <code>arr1</code> and <code>arr2</code> that consist only of non-negative integers.</p>
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<p>Consider the list containing the result of <code>arr1[i] AND arr2[j]</code> (bitwise <code>AND</code>) for every <code>(i, j)</code> pair where <code>0 <= i < arr1.length</code> and <code>0 <= j < arr2.length</code>.</p>
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<p>Return <em>the <strong>XOR sum</strong> of the aforementioned list</em>.</p>
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<p> </p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> arr1 = [1,2,3], arr2 = [6,5]
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<strong>Output:</strong> 0
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<strong>Explanation:</strong> The list = [1 AND 6, 1 AND 5, 2 AND 6, 2 AND 5, 3 AND 6, 3 AND 5] = [0,1,2,0,2,1].
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The XOR sum = 0 XOR 1 XOR 2 XOR 0 XOR 2 XOR 1 = 0.
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</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> arr1 = [12], arr2 = [4]
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<strong>Output:</strong> 4
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<strong>Explanation:</strong> The list = [12 AND 4] = [4]. The XOR sum = 4.
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</pre>
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<p> </p>
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<p><strong>Constraints:</strong></p>
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<ul>
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<li><code>1 <= arr1.length, arr2.length <= 10<sup>5</sup></code></li>
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<li><code>0 <= arr1[i], arr2[j] <= 10<sup>9</sup></code></li>
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</ul>
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