search(v,a,lo,hi):
| Input value v
| array a[lo..hi] of values
| Output true if v in a[lo..hi]
| false otherwise
|
| mid=(lo+hi)/2
| if lo>hi then return false
| if a[mid]=v then
| return true
| else if a[mid]<v then
| return search(v,a,mid+1,hi)
| else
| return search(v,a,lo,mid-1)
| end if
|