Java Math Exercises: Multiply two integers without using multiplication, division, bitwise operators, and loops
Java Math Exercises: Exercise-15 with Solution
Write a Java program to multiply two integers without using multiplication, division, bitwise operators, and loops.
Sample Solution:
Java Code:
import java.util.*;
public class solution {
public static int multiply_two_nums(int a, int b) {
/* 0 multiplied with anything gives 0 */
if (b == 0)
return 0;
if (b > 0)
return (a + multiply_two_nums(a, b - 1));
if (b < 0)
return -multiply_two_nums(a, -b);
return -1;
}
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
System.out.print("Input first integer: ");
int num1 = scan.nextInt();
System.out.print("Input second integer: ");
int num2 = scan.nextInt();
scan.close();
System.out.println("Multiply of two integers: "+multiply_two_nums(num1, num2));
}
}
Sample Output:
Input first integer: 5 Input second integer: 25 Multiply of two integers: 125
Flowchart:
Java Code Editor:
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Previous: Write a Java program to find the square root of a number using Babylonian method.
Next: Write a Java program to calculate power of a number without using multiplication and division operators.
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