basic-programs/java/recursion/NCR.java at master · Scarlet-Coder/basic-programs · GitHub

42 lines (22 loc) · 557 Bytes

import java.util.Scanner;

/**

* Created by buddhimah on 10/16/2017.

public class NCR {

public static int fac(int num){

int r;

if(num==1){

return 1;

}

r= fac(num-1)*num;

return r;

}

public static void main(String args[]){

Scanner sc = new Scanner(System.in);

System.out.println("Enter n ");

int n =sc.nextInt();

System.out.println("Enter k: ");

int k =sc.nextInt();

System.out.println(fac(n)/(fac(n-k)*fac(k)));

}

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