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44 lines
2.1 KiB
HTML
<p>You are given an array of <code>intervals</code>, where <code>intervals[i] = [start<sub>i</sub>, end<sub>i</sub>]</code> and each <code>start<sub>i</sub></code> is <strong>unique</strong>.</p>
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<p>The <strong>right interval</strong> for an interval <code>i</code> is an interval <code>j</code> such that <code>start<sub>j</sub> >= end<sub>i</sub></code> and <code>start<sub>j</sub></code> is <strong>minimized</strong>. Note that <code>i</code> may equal <code>j</code>.</p>
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<p>Return <em>an array of <strong>right interval</strong> indices for each interval <code>i</code></em>. If no <strong>right interval</strong> exists for interval <code>i</code>, then put <code>-1</code> at index <code>i</code>.</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> intervals = [[1,2]]
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<strong>Output:</strong> [-1]
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<strong>Explanation:</strong> There is only one interval in the collection, so it outputs -1.
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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> intervals = [[3,4],[2,3],[1,2]]
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<strong>Output:</strong> [-1,0,1]
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<strong>Explanation:</strong> There is no right interval for [3,4].
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The right interval for [2,3] is [3,4] since start<sub>0</sub> = 3 is the smallest start that is >= end<sub>1</sub> = 3.
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The right interval for [1,2] is [2,3] since start<sub>1</sub> = 2 is the smallest start that is >= end<sub>2</sub> = 2.
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</pre>
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<p><strong class="example">Example 3:</strong></p>
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<pre>
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<strong>Input:</strong> intervals = [[1,4],[2,3],[3,4]]
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<strong>Output:</strong> [-1,2,-1]
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<strong>Explanation:</strong> There is no right interval for [1,4] and [3,4].
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The right interval for [2,3] is [3,4] since start<sub>2</sub> = 3 is the smallest start that is >= end<sub>1</sub> = 3.
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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 <= intervals.length <= 2 * 10<sup>4</sup></code></li>
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<li><code>intervals[i].length == 2</code></li>
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<li><code>-10<sup>6</sup> <= start<sub>i</sub> <= end<sub>i</sub> <= 10<sup>6</sup></code></li>
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<li>The start point of each interval is <strong>unique</strong>.</li>
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</ul>
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