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39 lines
1.6 KiB
HTML
<p>You are given an integer array <code>nums</code>. A number <code>x</code> is <strong>lonely</strong> when it appears only <strong>once</strong>, and no <strong>adjacent</strong> numbers (i.e. <code>x + 1</code> and <code>x - 1)</code> appear in the array.</p>
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<p>Return <em><strong>all</strong> lonely numbers in </em><code>nums</code>. You may return the answer in <strong>any order</strong>.</p>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> nums = [10,6,5,8]
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<strong>Output:</strong> [10,8]
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<strong>Explanation:</strong>
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- 10 is a lonely number since it appears exactly once and 9 and 11 does not appear in nums.
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- 8 is a lonely number since it appears exactly once and 7 and 9 does not appear in nums.
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- 5 is not a lonely number since 6 appears in nums and vice versa.
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Hence, the lonely numbers in nums are [10, 8].
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Note that [8, 10] may also be returned.
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</pre>
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<p><strong class="example">Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> nums = [1,3,5,3]
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<strong>Output:</strong> [1,5]
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<strong>Explanation:</strong>
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- 1 is a lonely number since it appears exactly once and 0 and 2 does not appear in nums.
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- 5 is a lonely number since it appears exactly once and 4 and 6 does not appear in nums.
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- 3 is not a lonely number since it appears twice.
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Hence, the lonely numbers in nums are [1, 5].
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Note that [5, 1] may also be returned.
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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 <= nums.length <= 10<sup>5</sup></code></li>
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<li><code>0 <= nums[i] <= 10<sup>6</sup></code></li>
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</ul>
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