d

```
package com.thealgorithms.others;
import java.util.Arrays;
import java.util.Comparator;
/* Line Sweep algorithm can be used to solve range problems by first sorting the list of ranges
* by the start value of the range in non-decreasing order and doing a "sweep" through the number
* line(x-axis) by incrementing the start point by 1 and decrementing the end point+1 by 1 on the
* number line.
* An overlapping range is defined as (StartA <= EndB) AND (EndA >= StartB)
* References
* https://en.wikipedia.org/wiki/Sweep_line_algorithm
* https://en.wikipedia.org/wiki/De_Morgan%27s_laws>
*/
public final class LineSweep {
private LineSweep() {
}
/**
* Find Maximum end point
* param = ranges : Array of range[start,end]
* return Maximum Endpoint
*/
public static int findMaximumEndPoint(int[][] ranges) {
Arrays.sort(ranges, Comparator.comparingInt(a -> a[1]));
return ranges[ranges.length - 1][1];
}
/**
* Find if any ranges overlap
* param = ranges : Array of range[start,end]
* return true if overlap exists false otherwise.
*/
public static boolean isOverlap(int[][] ranges) {
int maximumEndPoint = findMaximumEndPoint(ranges);
Arrays.sort(ranges, Comparator.comparingInt(a -> a[0]));
int[] numberLine = new int[maximumEndPoint + 2];
for (int[] range : ranges) {
int start = range[0];
int end = range[1];
numberLine[start] += 1;
numberLine[end + 1] -= 1;
}
int current = 0;
int overlaps = 0;
for (int num : numberLine) {
current += num;
overlaps = Math.max(overlaps, current);
}
return overlaps > 1;
}
}
```