Question

How to calculate the LCM (Least Common Multiple) of 4 numbers in Java

Answer 1

public class MyClass {
    static int getLMC(int a, int b, int c, int d) {
        int lmc = Math.max(Math.max(Math.max(a, b), c), d);
          
        while(true) {
            if (lmc % a == 0 && lmc % b == 0 && lmc % c == 0 && lmc % d == 0) {
                return lmc;
            }
            lmc++;
        }
    }
    public static void main(String args[]) {
        int a = 12, b = 15, c = 10, d = 75;
 
        System.out.format("The LCM (Least Common Multiple) is: %d\n", getLMC(a, b, c, d));
    }
}
 
 
 
  
/*
run:
  
The LCM (Least Common Multiple) is: 300
  
*/

 

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Answer 2

public class MyClass {
    static int getLMC(int a, int b) {
        int lmc = (a > b) ? a : b;
          
        while(true) {
            if (lmc % a == 0 && lmc % b == 0) {
                return lmc;
            }
            lmc++;
        }
    }
    public static void main(String args[]) {
        int a = 12, b = 15, c = 10, d = 75;
 
        System.out.format("The LCM (Least Common Multiple) is: %d\n", getLMC(getLMC(getLMC(a, b), c), d));
    }
}
 
 
 
  
/*
run:
  
The LCM (Least Common Multiple) is: 300
  
*/

 

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