diff --git a/go/divide-intervals-into-minimum-number-of-groups.go b/go/divide-intervals-into-minimum-number-of-groups.go new file mode 100644 index 0000000..271cf53 --- /dev/null +++ b/go/divide-intervals-into-minimum-number-of-groups.go @@ -0,0 +1,27 @@ +package main + +func minGroups(intervals [][]int) int { + minStart, maxEnd := intervals[0][0], intervals[0][1] + for _, interval := range intervals { + start, end := interval[0], interval[1] + + minStart = min(minStart, start) + maxEnd = max(maxEnd, end) + } + + hits := make([]int, maxEnd+2) + for _, interval := range intervals { + start, end := interval[0], interval[1] + hits[start]++ + hits[end+1]-- + } + + concurrent, maxConcurrent := 0, 0 + for i := minStart; i <= maxEnd; i++ { + concurrent += hits[i] + + maxConcurrent = max(maxConcurrent, concurrent) + } + + return maxConcurrent +}