Go Distinct
func distinct(a []int) int {
seen := make(map[int]struct{}, len(a))
for _, v := range a {
seen[v] = struct{}{}
}
return len(seen)
}
This counts unique values by tracking what has already been seen.
func distinct(a []int) int {
seen := make(map[int]struct{}, len(a))
for _, v := range a {
seen[v] = struct{}{}
}
return len(seen)
}
This counts unique values by tracking what has already been seen.