Java – Programs on Arithmetic Operators

Find the average of two numbers:

public class Practice
{
            public static void main(String[] args)
            {
                        int num1= 5 , num2 = 3;
                        int avg = (num1+num2)/2;
                        System.out.println(“Average : ” + avg);
            }
}

Find the Sum of Square and Cube of a Number:

public class Practice
{
            public static void main(String[] args)
            {
                        int a = 5;
                        int sq = a*a;
                        int cu = a*a*a;
                        int sum = sq + cu;
                        System.out.println(“Square of : ” + a + ” is : ” + sq);
                        System.out.println(“Cube of : ” + a + ” is : ” + cu);
                        System.out.println(“Sum is : ” + sum);
            }
}

Perform Arithmetic Operations:

public class Practice
{
            public static void main(String[] args)
            {
                        int a=5, b=2;
                        System.out.println(a + ” + ” + b + ” = ” + (a+b));
                        System.out.println(a + ” – ” + b + ” = ” + (a-b));
                        System.out.println(a + ” * ” + b + ” = ” + (a*b));
                        System.out.println(a + ” / ” + b + ” = ” + (a/b));
                        System.out.println(a + ” % ” + b + ” = ” + (a%b));
            }
}

Print Last Digit of given Number:

public class Practice
{
            public static void main(String[] args)
            {
                        int n = 365;
                        int d = n%10;
                        System.out.println(“Last digit of ” + n + ” is ” + d);
            }
}

Remove Last Digit of Given Number

public class Practice
{
            public static void main(String[] args)
            {
                        int n=365;
                        n = n/10;
                        System.out.println(“After remove last digit : ” + n);
            }
}

Find the Sum of First N Natural Numbers:

Formula: n(n+1)/2

public class Practice
{
            public static void main(String[] args)
            {
                        int n = 5;
                        int sum = n*(n+1)/2;
                        System.out.println(“Sum of First ” + n + ” numbers : ” + sum);
            }
}

Calculate Total Salary of Employee:

public class Practice
{
            public static void main(String[] args)
            {
                        double basic = 25000;
                        double hra = 0.25*basic;
                        double ta = 0.2*basic;
                        double da = 0.15*basic;
                        double total = basic + hra + ta + da ;
                        System.out.println(“Total Salary : ” + total);
            }
}

Find the Third Angle in Triangle:

Sum of angles of a triangle is 180 degrees
If two angles given, then third angle become -> c = 180 – (a+b)

public class Practice
{
            public static void main(String[] args)
            {
                        int a=70, b=60, c;
                        c = 180 – (a + b);
                        System.out.println(“Third angle is : ” + c);
            }
}

Swap two Numbers:

public class Practice
{
            public static void main(String[] args)
            {
                        int a=5, b=3;
                        System.out.println(“Before Swap : ” + a + “, ” + b);
                        int temp=a;
                        a=b;
                        b=temp;
                        System.out.println(“After Swap : ” + a + “, ” + b);
            }
}

Swap two numbers without third variable:

public class Practice
{
            public static void main(String[] args)
            {
                        int a=5, b=3;
                        System.out.println(“Before Swap : ” + a + “, ” + b);
                        a = a+b;
                        b = a-b;
                        a = a-b;
                        System.out.println(“After Swap : ” + a + “, ” + b);
            }
}

Display Amount based on Quantity: Accept the rate for a dozen bananas and the quantity required to determine the cost:

import java.util.Scanner;
public class Practice
{
            public static void main(String[] args)
            {
                        double cost, quantity, amount;
                        cost = 55;
                        quantity = 38;
                        amount = quantity/12 * cost ;
                        System.out.println(“Amount is : ” + amount);
            }
}

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