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Binomial Coefficient in java
Binomial coefficient (c(n, r) or nCr) is calculated using the formula n!/r!*(n-r)!. Following is the Java program find out the binomial coefficient of given integers.
Program
import java.util.Scanner; public class BinomialCoefficient { public static long fact(int i) { if(i <= 1) { return 1; } return i * fact(i - 1); } public static void main(String args[]) { Scanner sc = new Scanner(System.in); System.out.println("Enter n value: "); int n = sc.nextInt(); System.out.println("Enter r value: "); int r = sc.nextInt(); long ncr = fact(n)/(fact(r)*fact(n-r)); System.out.println("c("+n+", "+r+") :"+ ncr); } }
Output
Enter n value: 8 Enter r value: 3 c(8, 3) :56
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