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Adds Kotlin solutions for problems #252 and #253#2679

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Merged
a93a merged 3 commits intoneetcode-gh:mainfromtechnophilist:main
Jul 19, 2023
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4 changes: 2 additions & 2 deletionsREADME.md
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Expand Up@@ -471,8 +471,8 @@ If you would like to have collaborator permissions on the repo to merge your own
<sub>[0057 - Insert Interval](https://leetcode.com/problems/insert-interval/)</sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](cpp%2F0057-insert-interval.cpp)</div></sub> | <sub><div align='center'>[✔️](csharp%2F0057-insert-interval.cs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](go%2F0057-insert-interval.go)</div></sub> | <sub><div align='center'>[✔️](java%2F0057-insert-interval.java)</div></sub> | <sub><div align='center'>[✔️](javascript%2F0057-insert-interval.js)</div></sub> | <sub><div align='center'>[✔️](kotlin%2F0057-insert-interval.kt)</div></sub> | <sub><div align='center'>[✔️](python%2F0057-insert-interval.py)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](rust%2F0057-insert-interval.rs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](swift%2F0057-insert-interval.swift)</div></sub> | <sub><div align='center'>[✔️](typescript%2F0057-insert-interval.ts)</div></sub>
<sub>[0056 - Merge Intervals](https://leetcode.com/problems/merge-intervals/)</sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](cpp%2F0056-merge-intervals.cpp)</div></sub> | <sub><div align='center'>[✔️](csharp%2F0056-merge-intervals.cs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](go%2F0056-merge-intervals.go)</div></sub> | <sub><div align='center'>[✔️](java%2F0056-merge-intervals.java)</div></sub> | <sub><div align='center'>[✔️](javascript%2F0056-merge-intervals.js)</div></sub> | <sub><div align='center'>[✔️](kotlin%2F0056-merge-intervals.kt)</div></sub> | <sub><div align='center'>[✔️](python%2F0056-merge-intervals.py)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](scala%2F0056-merge-intervals.scala)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](typescript%2F0056-merge-intervals.ts)</div></sub>
<sub>[0435 - Non Overlapping Intervals](https://leetcode.com/problems/non-overlapping-intervals/)</sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](cpp%2F0435-non-overlapping-intervals.cpp)</div></sub> | <sub><div align='center'>[✔️](csharp%2F0435-non-overlapping-intervals.cs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](go%2F0435-non-overlapping-intervals.go)</div></sub> | <sub><div align='center'>[✔️](java%2F0435-non-overlapping-intervals.java)</div></sub> | <sub><div align='center'>[✔️](javascript%2F0435-non-overlapping-intervals.js)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](python%2F0435-non-overlapping-intervals.py)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](scala%2F0435-non-overlapping-intervals.scala)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](typescript%2F0435-non-overlapping-intervals.ts)</div></sub>
<sub>[0252 - Meeting Rooms](https://leetcode.com/problems/meeting-rooms/)</sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](cpp%2F0252-meeting-rooms.cpp)</div></sub> | <sub><div align='center'>[✔️](csharp%2F0252-meeting-rooms.cs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](java%2F0252-meeting-rooms.java)</div></sub> | <sub><div align='center'>[✔️](javascript%2F0252-meeting-rooms.js)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](python%2F0252-meeting-rooms.py)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub>
<sub>[0253 - Meeting Rooms II](https://leetcode.com/problems/meeting-rooms-ii/)</sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](cpp%2F0253-meeting-rooms-ii.cpp)</div></sub> | <sub><div align='center'>[✔️](csharp%2F0253-meeting-rooms-ii.cs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](java%2F0253-meeting-rooms-ii.java)</div></sub> | <sub><div align='center'>[✔️](javascript%2F0253-meeting-rooms-ii.js)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](python%2F0253-meeting-rooms-ii.py)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](rust%2F0253-meeting-rooms-ii.rs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub>
<sub>[0252 - Meeting Rooms](https://leetcode.com/problems/meeting-rooms/)</sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](cpp%2F0252-meeting-rooms.cpp)</div></sub> | <sub><div align='center'>[✔️](csharp%2F0252-meeting-rooms.cs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](java%2F0252-meeting-rooms.java)</div></sub> | <sub><div align='center'>[✔️](javascript%2F0252-meeting-rooms.js)</div></sub> | <sub><div align='center'>[✔️](kotlin%2F0252-meeting-rooms.kt)</div></sub> | <sub><div align='center'>[✔️](python%2F0252-meeting-rooms.py)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub>
<sub>[0253 - Meeting Rooms II](https://leetcode.com/problems/meeting-rooms-ii/)</sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](cpp%2F0253-meeting-rooms-ii.cpp)</div></sub> | <sub><div align='center'>[✔️](csharp%2F0253-meeting-rooms-ii.cs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](java%2F0253-meeting-rooms-ii.java)</div></sub> | <sub><div align='center'>[✔️](javascript%2F0253-meeting-rooms-ii.js)</div></sub> | <sub><div align='center'>[✔️](kotlin%2F0253-meeting-rooms-ii.kt)</div></sub> | <sub><div align='center'>[✔️](python%2F0253-meeting-rooms-ii.py)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](rust%2F0253-meeting-rooms-ii.rs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub>
<sub>[1288 - Remove Covered Intervals](https://leetcode.com/problems/remove-covered-intervals/)</sub> | <sub><div align='center'>[✔️](c%2F1288-Remove-Covered-Intervals.c)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub>
<sub>[1851 - Minimum Interval to Include Each Query](https://leetcode.com/problems/minimum-interval-to-include-each-query/)</sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](cpp%2F1851-Minimum-Interval-To-Include-Each-Query.cpp)</div></sub> | <sub><div align='center'>[✔️](csharp%2F1851-Minimum-Interval-to-Include-Each-Query.cs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](java%2F1851-Minimum-Interval-to-Include-Each-Query.java)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](python%2F1851-minimum-interval-to-include-each-query.py)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub>
<sub>[0352 - Data Stream as Disjoint Intervals](https://leetcode.com/problems/data-stream-as-disjoint-intervals/)</sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](go%2F0352-data-stream-as-disjoint-intervals.go)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](javascript%2F0352-data-stream-as-disjoint-intervals.js)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](rust%2F0352-data-stream-as-disjoint-intervals.rs)</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>❌</div></sub> | <sub><div align='center'>[✔️](typescript%2F0352-data-stream-as-disjoint-intervals.ts)</div></sub>
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13 changes: 13 additions & 0 deletionskotlin/0252-meeting-rooms.kt
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@@ -0,0 +1,13 @@
class Solution {
fun canAttendMeetings(intervals: Array<IntArray>): Boolean {
if (intervals.isEmpty()) return true
intervals.sortBy { it.first() }
var (_, previousEnd) = intervals.first()
for (i in 1..intervals.lastIndex) {
val (currentStart, currentEnd) = intervals[i]
if (currentStart < previousEnd) return false // they are overlapping
previousEnd = currentEnd
}
return true
}
}
18 changes: 18 additions & 0 deletionskotlin/0253-meeting-rooms-ii.kt
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@@ -0,0 +1,18 @@
class Solution {
fun minMeetingRooms(intervals: Array<IntArray>): Int {
val startTimes = intervals.map { it.first() }.sorted()
val endTimes = intervals.map { it.last() }.sorted()
var (startIndex, endIndex) = Pair(0, 0)
var minMeetingRooms = 0
while (startIndex in startTimes.indices) {
if (startTimes[startIndex] < endTimes[endIndex]) {
minMeetingRooms++
startIndex++
} else {
startIndex++
endIndex++
}
}
return minMeetingRooms
}
}
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