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73 lines
2.4 KiB
HTML
73 lines
2.4 KiB
HTML
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<p>给定一个长度为 <code>n</code> 的整数数组 <code>nums</code> 和一个二维数组 <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>queries[i]</code>：</p>
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<ul>
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<li>在 <code>nums</code> 的下标范围 <code>[l<sub>i</sub>, r<sub>i</sub>]</code> 内选择一个下标 <span data-keyword="subset">子集</span>。</li>
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<li>将选中的每个下标对应的元素值减 1。</li>
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</ul>
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<p><strong>零数组 </strong>是指所有元素都等于 0 的数组。</p>
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<p>如果在按顺序处理所有查询后，可以将 <code>nums</code> 转换为 <strong>零数组 </strong>，则返回 <code>true</code>，否则返回 <code>false</code>。</p>
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<p> </p>
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<p><strong class="example">示例 1：</strong></p>
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<div class="example-block">
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<p><strong>输入：</strong> <span class="example-io">nums = [1,0,1], queries = [[0,2]]</span></p>
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<p><strong>输出：</strong> <span class="example-io">true</span></p>
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<p><strong>解释：</strong></p>
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<ul>
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<li><strong>对于 i = 0：</strong>
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<ul>
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<li>选择下标子集 <code>[0, 2]</code> 并将这些下标处的值减 1。</li>
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<li>数组将变为 <code>[0, 0, 0]</code>，这是一个零数组。</li>
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</ul>
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</li>
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</ul>
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</div>
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<p><strong class="example">示例 2：</strong></p>
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<div class="example-block">
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<p><strong>输入：</strong> <span class="example-io">nums = [4,3,2,1], queries = [[1,3],[0,2]]</span></p>
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<p><strong>输出：</strong> <span class="example-io">false</span></p>
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<p><strong>解释：</strong></p>
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<ul>
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<li><strong>对于 i = 0：</strong>
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<ul>
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<li>选择下标子集 <code>[1, 2, 3]</code> 并将这些下标处的值减 1。</li>
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<li>数组将变为 <code>[4, 2, 1, 0]</code>。</li>
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</ul>
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</li>
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<li><strong>对于 i = 1：</strong>
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<ul>
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<li>选择下标子集 <code>[0, 1, 2]</code> 并将这些下标处的值减 1。</li>
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<li>数组将变为 <code>[3, 1, 0, 0]</code>，这不是一个零数组。</li>
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</ul>
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</li>
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</ul>
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</div>
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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 <= nums.length <= 10<sup>5</sup></code></li>
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<li><code>0 <= nums[i] <= 10<sup>5</sup></code></li>
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<li><code>1 <= queries.length <= 10<sup>5</sup></code></li>
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<li><code>queries[i].length == 2</code></li>
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<li><code>0 <= l<sub>i</sub> <= r<sub>i</sub> < nums.length</code></li>
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</ul>
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