Package g0401_0500.s0436_find_right_interval

Class Solution

java.lang.Object

g0401_0500.s0436_find_right_interval.Solution

public class Solution
extends Object

436 - Find Right Interval.<p>Medium</p> <p>You are given an array of <code>intervals</code>, where <code>intervals[i] = [start_i, end_i]</code> and each <code>start_i</code> is <strong>unique</strong>.</p> <p>The <strong>right interval</strong> for an interval <code>i</code> is an interval <code>j</code> such that <code>start_j</code><code> >= end_i</code> and <code>start_j</code> is <strong>minimized</strong>.</p> <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> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> intervals = [[1,2]]</p> <p><strong>Output:</strong> [-1]</p> <p><strong>Explanation:</strong> There is only one interval in the collection, so it outputs -1.</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> intervals = [[3,4],[2,3],[1,2]]</p> <p><strong>Output:</strong> [-1,0,1]</p> <p><strong>Explanation:</strong></p> <p>There is no right interval for [3,4].</p> <p>The right interval for [2,3] is [3,4] since start₀ = 3 is the smallest start that is >= end₁ = 3.</p> <p>The right interval for [1,2] is [2,3] since start₁ = 2 is the smallest start that is >= end₂ = 2.</p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> intervals = [[1,4],[2,3],[3,4]]</p> <p><strong>Output:</strong> [-1,2,-1]</p> <p><strong>Explanation:</strong></p> <p>There is no right interval for [1,4] and [3,4].</p> <p>The right interval for [2,3] is [3,4] since start₂ = 3 is the smallest start that is >= end₁ = 3.</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= intervals.length <= 2 * 10⁴</code></li> <li><code>intervals[i].length == 2</code></li> <li><code>-10⁶ <= start_i <= end_i <= 10⁶</code></li> <li>The start point of each interval is <strong>unique</strong>.</li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int[]	findRightInterval(int[][] intervals)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

findRightInterval

public int[] findRightInterval(int[][] intervals)