package format
import "math"
func Normalize(vec []float64) []float64 {
var sum float64
for _, v := range vec {
sum += v * v
}
sum = math.Sqrt(sum)
var norm float64
if sum > 0 {
norm = 1.0 / sum
} else {
norm = 0.0
for i := range vec {
vec[i] *= norm
return vec