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45 lines
1.5 KiB
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45 lines
1.5 KiB
HTML
<p>有一个正整数数组 <code>arr</code>，现给你一个对应的查询数组 <code>queries</code>，其中 <code>queries[i] = [L<sub>i, </sub>R<sub>i</sub>]</code>。</p>
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<p>对于每个查询 <code>i</code>，请你计算从 <code>L<sub>i</sub></code> 到 <code>R<sub>i</sub></code> 的 <strong>XOR</strong> 值（即 <code>arr[L<sub>i</sub>] <strong>xor</strong> arr[L<sub>i</sub>+1] <strong>xor</strong> ... <strong>xor</strong> arr[R<sub>i</sub>]</code>）作为本次查询的结果。</p>
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<p>并返回一个包含给定查询 <code>queries</code> 所有结果的数组。</p>
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<p> </p>
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<p><strong>示例 1：</strong></p>
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<pre>
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<strong>输入：</strong>arr = [1,3,4,8], queries = [[0,1],[1,2],[0,3],[3,3]]
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<strong>输出：</strong>[2,7,14,8]
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<strong>解释：</strong>
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数组中元素的二进制表示形式是：
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1 = 0001
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3 = 0011
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4 = 0100
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8 = 1000
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查询的 XOR 值为：
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[0,1] = 1 xor 3 = 2
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[1,2] = 3 xor 4 = 7
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[0,3] = 1 xor 3 xor 4 xor 8 = 14
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[3,3] = 8
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</pre>
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<p><strong>示例 2：</strong></p>
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<pre>
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<strong>输入：</strong>arr = [4,8,2,10], queries = [[2,3],[1,3],[0,0],[0,3]]
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<strong>输出：</strong>[8,0,4,4]
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</pre>
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<p> </p>
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<p><strong>提示：</strong></p>
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<ul>
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<li><code>1 <= arr.length <= 3 * 10^4</code></li>
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<li><code>1 <= arr[i] <= 10^9</code></li>
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<li><code>1 <= queries.length <= 3 * 10^4</code></li>
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<li><code>queries[i].length == 2</code></li>
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<li><code>0 <= queries[i][0] <= queries[i][1] < arr.length</code></li>
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</ul>
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