Java Guava | binomial(int n, int k) of LongMath Class with Examples

Java Guava | pow(long b, int k) of LongMath Class with Examples

binomial(int n, int k)

LongMath Class

Syntax :

public static long binomial(int n, int k)

Parameters

Return Value :

Exceptions :

IllegalArgumentException

Example 1 :

// Java code to show implementation of 
// binomial(int n, int k) method of Guava's 
// LongMath class 
import java.math.RoundingMode; 
import com.google.common.math.LongMath; 
  
class GFG { 
  
    // Driver code 
    public static void main(String args[]) 
    { 
        int n = 4; 
        int k = 3; 
  
        // Using binomial(int n, int k) method of 
        // Guava's LongMath class 
        long ans = LongMath.binomial(n, k); 
  
        System.out.println("Binomial Coefficient of "
                           + n + " and " + k 
                           + " is : " + ans); 
  
        int n1 = 20; 
        int k1 = 4; 
  
        // Using binomial(int n, int k) method of 
        // Guava's LongMath class 
        long ans1 = LongMath.binomial(n1, k1); 
  
        System.out.println("Binomial Coefficient of "
                           + n1 + " and " + k1 
                           + " is : " + ans1); 
    } 
} 

Output:

Binomial Coefficient of 4 and 3 is : 4
Binomial Coefficient of 20 and 4 is : 4845

Example 2 :

// Java code to show implementation of 
// binomial(int n, int k) method of Guava's 
// LongMath class 
  
import java.math.RoundingMode; 
import com.google.common.math.LongMath; 
  
class GFG { 
  
    static long findBinomial(int n, int k) 
    { 
        try { 
            // Using binomial(int n, int k) 
            // method of Guava's LongMath class 
            // This should throw "IllegalArgumentException" 
            // as k < 0 
            long ans = LongMath.binomial(n, k); 
  
            // Return the answer 
            return ans; 
        } 
        catch (Exception e) { 
            System.out.println(e); 
            return -1; 
        } 
    } 
  
    // Driver code 
    public static void main(String args[]) 
    { 
        int n = 5; 
        int k = 7; 
  
        try { 
            // Function calling 
            findBinomial(n, k); 
        } 
        catch (Exception e) { 
            System.out.println(e); 
        } 
    } 
} 

Output:

java.lang.IllegalArgumentException: k (7) > n (5)

Reference :

https://google.github.io/guava/releases/20.0/api/docs/com/google/common/math/LongMath.html#binomial-int-int-

Tags:

#Guava-LongMath #Java-Functions #java-guava #Java #Java

Java Guava | pow(long b, int k) of LongMath Class with Examples

Java Guava | binomial(int n, int k) of LongMath Class with Examples

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