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#include<iostream.h>
#include<conio.h>
#include<ctype.h>
void main() {
int banyak_bilangan, i, j, bilangan[100], temp, awal, akhir, tengah, bilangan_dicari;
char ulang = 'Y' ;
cout<<"Masukan Banyaknya Bilangan = ";
cin>>banyak_bilangan;
cout<<endl;
cout<<"INPUT BILANGAN"<<endl;
cout<<"=============="<<endl;
for(i=0; i<banyak_bilangan; i++) {
cout<<"masukan bilangan ke "<<(i+1)<<" = ";
cin>>bilangan[i];
}
cout<<endl;
while(toupper(ulang) == 'Y') {
clrscr();
cout<<"OUTPUT BILANGAN"<<endl;
cout<<"==============="<<endl;
for(i=0; i<(banyak_bilangan)-1; i++) {
for(j=i+1; j<banyak_bilangan; j++) {
if(bilangan[i] > bilangan[j]) {
temp = bilangan[i];
bilangan[i] = bilangan[j];
bilangan[j] = temp;
}

}
}
cout<<"deretan bilangan setelah diurutkan = ";
for(i=0; i<banyak_bilangan; i++) {
cout<<bilangan[i]<<" ";
}
cout<<endl<<endl;
cout<<"masukan bilangan yang akan dicari = ";
cin>>bilangan_dicari;
awal = 0;
akhir = banyak_bilangan - 1;
tengah = (awal + akhir)/2;
while((bilangan[tengah] != bilangan_dicari) && (akhir >= awal)) {
if(bilangan_dicari > bilangan[tengah]) {
awal = tengah + 1;
}
else {
akhir = tengah - 1;
}
tengah = (awal + akhir) / 2;
}
if(bilangan[tengah] == bilangan_dicari) {
cout<<"Bilangan "<<bilangan_dicari<<" Ditemukan pada index ke "<<tengah<<" atau elemen ke
"<<(tengah+1);
}
else {
cout<<"Bilangan "<<bilangan_dicari<<" Tidak ditemukan";
}

cout<<endl<<endl;
cout<<"ulangi proses pencarian (Y/N) = ";
cin>>ulang;
}
}

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