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| // @Title: 汇总区间 (Summary Ranges)
// @Author: 15816537946@163.com
// @Date: 2021-01-10 20:56:37
// @Runtime: 0 ms
// @Memory: 1.9 MB
func summaryRanges(nums []int) []string {
n := len(nums)
if n == 0 {
return nil
}
if n == 1 {
return []string{fmt.Sprintf("%d", nums[0])}
}
var ret []string
min := math.MinInt32
for i := 0; i < n; i++ {
a, b := nums[i], min
for i < n-1 && nums[i]+1 == nums[i+1] {
i++
b = nums[i]
}
if b != min {
ret = append(ret, fmt.Sprintf("%d->%d", a, b))
} else {
ret = append(ret, fmt.Sprintf("%d", a))
}
}
return ret
}
|