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| package main
import "sort"
func merge(intervals [][]int) [][]int { if len(intervals) <= 1 { return intervals }
sort.Slice(intervals, func(i, j int) bool { return intervals[i][0] < intervals[j][0] })
merged := [][]int{intervals[0]}
for i := 1; i < len(intervals); i++ { current := intervals[i] last := merged[len(merged)-1]
if current[0] > last[1] { merged = append(merged, current) } else { if current[1] > last[1] { merged[len(merged)-1][1] = current[1] } } } return merged }
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