LeetCode 3268: Find Overlapping Shifts II Solution
Master LeetCode problem 3268 (Find Overlapping Shifts II), a hard challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
3268. Find Overlapping Shifts II
Problem Explanation
Explanation
We are given a list of shifts represented as intervals. Our task is to find the maximum number of overlapping shifts at any point in time.
To solve this problem, we need to sort the shifts based on their start times and end times separately. Then we can iterate through the sorted lists and keep track of the number of overlapping shifts at each time point.
Solution Code
import java.util.*;
class Solution {
public int findOverlappingShifts(int[][] shifts) {
List<int[]> events = new ArrayList<>();
for (int[] shift : shifts) {
events.add(new int[]{shift[0], 1});
events.add(new int[]{shift[1], -1});
}
Collections.sort(events, (a, b) -> a[0] != b[0] ? a[0] - b[0] : b[1] - a[1]);
int overlap = 0, maxOverlap = 0;
for (int[] event : events) {
overlap += event[1];
maxOverlap = Math.max(maxOverlap, overlap);
}
return maxOverlap;
}
}Try It Yourself
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