Math & Random

Math Functions in Java



Common math functions:

    
Math.sqrt() : Returns the square root of a number.
    
Math.pow() : Returns the value of a number raised to the power of another.
    
Math.max() : Returns the larger of two numbers.
    
Math.min() : Returns the smaller of two numbers.
    
Math.abs() : Returns the absolute value of a number.





Syntax Example:


    
System.out.println(Math.sqrt(16));  // Output: 4.0
    
System.out.println(Math.pow(2, 3));  // Output: 8.0
    
System.out.println(Math.max(10, 20));  // Output: 20
    
System.out.println(Math.min(10, 20));  // Output: 10
    
System.out.println(Math.abs(-5));  // Output: 5


Random Numbers in Java



Generating random numbers:

    
Math.random() : Returns a random double value between 0.0 and 1.0.
    
Random class : Provides more flexibility, allowing random integers, doubles, etc.


Syntax Example:


    
System.out.println(Math.random());  // Output: Random number between 0.0 and 1.0
    
Random rand = new Random();
    
System.out.println(rand.nextInt(100));  // Output: Random integer between 0 and 99
    


Program



Input:



// Java program demonstrating math functions and random number generation
import java.util.Random;

public class MathAndRandomExample {
    public static void main(String[] args) {
        // Math functions
        System.out.println("Square root of 16: " + Math.sqrt(16));
        System.out.println("2 raised to the power of 3: " + Math.pow(2, 3));
        System.out.println("Max of 10 and 20: " + Math.max(10, 20));
        System.out.println("Min of 10 and 20: " + Math.min(10, 20));
        System.out.println("Absolute value of -5: " + Math.abs(-5));

        // Random number generation
        System.out.println("\nRandom number using Math.random(): " + Math.random());
        
        Random rand = new Random();
        System.out.println("Random integer between 0 and 99: " + rand.nextInt(100));
        
    }
}


   OUTPUT