binary search golang
package search
// iterative version
func binarySearch(a []float64, value float64) int {
low := 0
high := len(a) - 1
for low <= high {
mid := (low + high) / 2
if a[mid] > value {
high = mid - 1
} else if a[mid] < value {
low = mid + 1
} else {
return mid
}
}
return -1
}