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63 lines
2.2 KiB
HTML
63 lines
2.2 KiB
HTML
<p>You are given an integer array <code>nums</code>. You need to ensure that the elements in the array are <strong>distinct</strong>. To achieve this, you can perform the following operation any number of times:</p>
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<ul>
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<li>Remove 3 elements from the beginning of the array. If the array has fewer than 3 elements, remove all remaining elements.</li>
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</ul>
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<p><strong>Note</strong> that an empty array is considered to have distinct elements. Return the <strong>minimum</strong> number of operations needed to make the elements in the array distinct.<!-- notionvc: 210ee4f2-90af-4cdf-8dbc-96d1fa8f67c7 --></p>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<div class="example-block">
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<p><strong>Input:</strong> <span class="example-io">nums = [1,2,3,4,2,3,3,5,7]</span></p>
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<p><strong>Output:</strong> <span class="example-io">2</span></p>
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<p><strong>Explanation:</strong></p>
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<ul>
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<li>In the first operation, the first 3 elements are removed, resulting in the array <code>[4, 2, 3, 3, 5, 7]</code>.</li>
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<li>In the second operation, the next 3 elements are removed, resulting in the array <code>[3, 5, 7]</code>, which has distinct elements.</li>
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</ul>
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<p>Therefore, the answer is 2.</p>
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</div>
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<p><strong class="example">Example 2:</strong></p>
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<div class="example-block">
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<p><strong>Input:</strong> <span class="example-io">nums = [4,5,6,4,4]</span></p>
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<p><strong>Output:</strong> 2</p>
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<p><strong>Explanation:</strong></p>
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<ul>
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<li>In the first operation, the first 3 elements are removed, resulting in the array <code>[4, 4]</code>.</li>
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<li>In the second operation, all remaining elements are removed, resulting in an empty array.</li>
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</ul>
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<p>Therefore, the answer is 2.</p>
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</div>
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<p><strong class="example">Example 3:</strong></p>
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<div class="example-block">
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<p><strong>Input:</strong> <span class="example-io">nums = [6,7,8,9]</span></p>
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<p><strong>Output:</strong> <span class="example-io">0</span></p>
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<p><strong>Explanation:</strong></p>
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<p>The array already contains distinct elements. Therefore, the answer is 0.</p>
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</div>
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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 <= nums.length <= 100</code></li>
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<li><code>1 <= nums[i] <= 100</code></li>
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</ul>
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