 # How to do exponents in java without math

1. Multiply maybe ?!? After all next power = previous power * 2 ..eg 2^1=2 2^2 = 4 , 2^3 = 4*2 = 8 – GoldRoger Apr 19 ’14 at 16:45.
2. Make sure to preserve whether the power is negative. If so, divide, not multiply. –
3. to get exponents you use log , not pow . pow is used to get the powers – phuclv Oct 10 ’14 at 2:11.

## How do you solve exponents in Java?

pow in Java. The core of the method for calculating exponents in Java is the math. pow() function, which takes two values and calculates one to the power of the other.

## How do you do powers in Java?

1. If the second parameter is positive or negative zero then the result will be 1.0.
2. If the second parameter is 1.0 then the result will be same as that of the first parameter.

## How do you find the power of a number in Java?

1. Read or initialize base and exponent.
2. Take another variable (power) to store the result and initialize it to 1.
3. Using the for loop or while loop, multiply the base by power and store the result into power.
4. Repeat the above step (3) until the exponent becomes 0.
5. Print the result.

## How do you find the power of a number without pow function?

1. Let the input be. . X is the base and Y is the exponent.
2. Initialize power = 1.
3. Repeat the following steps Y times using a loop. power = power * X.
4. The final answer. is stored in power.

## What is -= in Java?

The -= operator first subtracts the value of the expression (on the right-hand side of the operator) from the value of the variable or property (on the left-hand side of the operator). The operator then assigns the result of that operation to the variable or property.

## How do you square something in Java?

Squaring a number in Java can be accomplished in two ways. One is by multiplying the number by itself. The other is by using the Math. pow() function, which takes two parameters: the number being modified and the power by which you’re raising it.

## How do you cast type in Java?

1. Widening Casting (automatically) – converting a smaller type to a larger type size. byte -> short -> char -> int -> long -> float -> double.
2. Narrowing Casting (manually) – converting a larger type to a smaller size type. double -> float -> long -> int -> char -> short -> byte.

## How do you reverse a digit in Java?

1. public class ReverseNumberExample1.
2. {
3. public static void main(String[] args)
4. {
5. int number = 987654, reverse = 0;
6. while(number != 0)
7. {
8. int remainder = number % 10;

## Is there any power function in Java?

The power function in Java is Math. pow(). It is used to get the power of the first argument to the second argument.

## What does math floor do in Java?

The java. lang. Math. floor() returns the double value that is less than or equal to the argument and is equal to the nearest mathematical integer.

## How do you throw an exception in Java?

Throwing an exception is as simple as using the “throw” statement. You then specify the Exception object you wish to throw. Every Exception includes a message which is a human-readable error description.

## How do you find the power of a number?

The power of a number has a special name: exponent. So we show the power of a number by using an exponent, and when we show a number with an exponent, we say that the number is raised to a power—the power of the exponent! This exponent tells us how many times we are going to multiply the base number by itself.

## How do you swap two numbers in Java?

1. import java.util.*;
2. class Swap_With {
3. public static void main(String[] args) {
4. int x, y, t;// x and y are to swap.
5. Scanner sc = new Scanner(System.in);
6. System.out.println(“Enter the value of X and Y”);
7. x = sc.nextInt();
8. y = sc.nextInt();

## How do I calculate power?

Power is equal to work divided by time. In this example, P = 9000 J /60 s = 150 W .