Print LCM of Two Integers in Java

Computations and programming when combined make a very deadly combination. As the ability to solve complex mathematical questions in itself is a great deal. But when one has to do the same thing by writing up a code, things get somewhat more complicated. Not to mention the language your coding in also determines whether it’s going to be easy to difficult. So today we’re going to write a program to print LCM of Two Integers in Java.

 

What’s The Approach? 

 

• Let us consider a and b to be the two Integers to find LCM of.

 

• Firstly we’ll find the gcd of these two numbers, i.e, using a condition where if a becomes zero we’ll return b else we’ll recursively return b % a, a

 

• Next, we’ll return multiplication of a with gcd of two numbers, and again multiply it with b. The returned value will be our LCM.

 

Also Read:  Print Cube Root of A Number in Java

 

Java Program To Print LCM of Two Integers

 

Input:

 

a = 15, b = 20

 

Output:

 

LCM of 15 and 20 is 60

 

// Java program to find LCM of two numbers.

class TechDecodeTutorials
{
    // Recursive method to return gcd of a and b
    static int gcd(int a, int b)
    {
        if (a == 0)
            return b;
        return gcd(b % a, a);
    }
    
    // method to return LCM of two numbers
    static int lcm(int a, int b)
    {
        return (a / gcd(a, b)) * b;
    }
    
    // Driver method
    public static void main(String[] args)
    {
        int a = 15, b = 20;
        System.out.println("LCM of " + a +
                        " and " + b +
                    " is " + lcm(a, b));
    }
}