prometheus/util/strutil/collection.go

29 lines
488 B
Go

package strutil
func MergeStrings(a, b []string) []string {
maxl := len(a)
if len(b) > len(a) {
maxl = len(b)
}
res := make([]string, 0, maxl*10/9)
for len(a) > 0 && len(b) > 0 {
switch {
case a[0] == b[0]:
res = append(res, a[0])
a, b = a[1:], b[1:]
case a[0] < b[0]:
res = append(res, a[0])
a = a[1:]
default:
res = append(res, b[0])
b = b[1:]
}
}
// Append all remaining elements.
res = append(res, a...)
res = append(res, b...)
return res
}