PERMUTASI

Algoritma Permutasi {menampilkan hasil kombinasi  n C r   = (n!) /(n-r)! }

Deklarasi : n : integer r  : integer int f;

Deskripsi : if ( n < 0) return 0; int f = 1; while (n >1) f* = n--; return f; if  (n < 0 || r < 0 || n < r) return factorial(n)/ factorial(n-r) ; }

Listing

#include <iostream.h>

#include <conio.h>

#include <math.h>

#include <string.h>

using namespace std;

int faktorial(int n){

if (n<0) return 0;

int f =1;

while (n>1) f*=n--;

return f;

}

int permutasi(int n, int r){

if (n<0 || r<0||n<r) return 0;

return faktorial(n)/faktorial(n-r);

}

int kombinasi(int n, int r){

if (n<0 || r<0 || n < r) return 0;

return faktorial(n)/(faktorial(n-r)*faktorial(r));

}

int main(int bil_pertama, int bil_kedua){

cout<<"\n";

cout<<"NUR KAHFI IBRAHIM\n";

cout<<"09018238\n";

cout<<"\n";

cout<<"|||||||||||||||||||||||||||\n";

cout<<"|                         |\n";

cout<<"| PERMUTASI DAN KOMBINASI |\n";

cout<<"|                         |\n";

cout<<"|||||||||||||||||||||||||||\n";

cout<<"\n";

cout<<"Masukan bilangan pertama : ";

cin>>bil_pertama;

cout<<"\n";

cout<<"Masukan bilangan kedua   : ";

cin>>bil_kedua;

cout<<"\n";

cout<<"HASIL PERMUTASI = "<<permutasi(bil_pertama,bil_kedua)<<endl;

cout<<"HASIL KOMBINASI = "<<kombinasi(bil_pertama,bil_kedua)<<endl;

getch();

}