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Olimpiade Sains Provinsi (OSP) 2016 - Komputer , Nomor 33

33

Perhatikan program Pascal berikut ini.

var
 arr: array [1..20] of integer = (303, 304, 365, 454, 487, 6, 12, 15, 78, 90,
155, 169, 183, 205, 209, 218, 5, 269, 282, 287);
function get : integer;
var
 m: integer;
 left, right: integer;
begin
 if (arr[1] < arr[20]) then
 get := 1
 else begin
 left := 1;
 right := 20;
 while (left < right) do
 begin
 m := (left+right) div 2;
 if (arr[1] <= arr[m]) then
 left := m+1
 else
 right := m;
 end;
 get := left;
 end;
end;