how do you write a number to a power in java

Full Answer

How to calculate power of a number in Java?

Java Math pow () Example 1: Calculate power of a number using a while loop class Main { public static void main(String [] args) { int base = 3, exponent = 4; long result = 1; while (exponent != 0) { result *= base; --exponent; } System.out.println ("Answer = " + result); } }

How to write a method to the second power in Java?

This is one of the articles from our Java Tutorial for Beginners. To write a method, raising a number to the second power. For example: Then you have to add the number 2 to the result. If you run this code on your computer, you will see the following in your console:

How to calculate power of a negative exponent in Java?

Both programs above do not work if you have a negative exponent. For that, you need to use the pow () function in Java standard library. In this program, we use Java's Math.pow () function to calculate the power of the given base. We can also compute the power of a negative number using the pow () method.

How to find the power of a number in C?

In order to find the power of a number, multiply the number itself 4 times, i.e. (5 * 5 * 5 * 5 = 625). Read or initialize base and exponent. Take another variable ( power) to store the result and initialize it to 1. Using the for loop or while loop, multiply the base by power and store the result into power.

How do you power a number in Java?

Steps to Find Power of a NumberRead or initialize base and exponent.Take another variable (power) to store the result and initialize it to 1.Using the for loop or while loop, multiply the base by power and store the result into power.Repeat the above step (3) until the exponent becomes 0.Print the result.

How do you write to the power of 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....PowerFunc1. java:public class PowerFunc1 {public static void main(String[] args){double a = 5;double b = 2;System. out. println(Math. pow(a, b)); // return a^b i.e. 5^2.}}

How do you write a power of 10 in Java?

Math. pow(10, exponent)

How do you declare a power 9 of 10 in Java?

pow() to take a large exponent. Since 109 fits into an int and is also exactly representable as a double , you can do this: int exp = (int) Math. pow(10, 9); BigInteger answer = BigInteger.

How do you write squared in Java?

Below is the basic Java code to square the number 5.//Square a Number.double x = 5;double z = x * x;System. out. println(z);

How do you raise an integer to a power in Java?

Use Math. pow() provided by the Java library. The number raised to the power of some other number can be calculated using this function. This method takes two parameters; the first number is the base while the second is the exponent.

How do you write 2 power n in Java?

Syntax: public static double pow(double a, double b) Parameter: a : this parameter is the base b : this parameter is the exponent. Return : This method returns ab.

Is there any power function in Java?

Power function in Java is used to calculate a number raised to the power of some other number. This function accepts two parameters and returns the value of the first parameter raised to the second parameter.

How do you calculate to the power of 3 in Java?

In this program, we use Java's Math. pow() function to calculate the power of the given base .

How do you write a superscript in Java?

You can write text as superscript or subscript using the Chunk class, and it's setTextRise() method. You use a positive text rise value for superscript, and a negative text rise value for subscript.

What is a math.pow?

You can use Math.pow (value, power).

Is math.pow faster than multiplying?

I did the benchmarking with Math.pow (x,2) and x*x, the result is that Math.pow () is easily forty times slower than manually multiplying it by itself, so i don't recommend it for anything where a little bit of performance is required.

Does integer precision work for multiplication?

Eliminates all the floating point, and converts a division by a constant to a multiplication, which should execute faster. Integer precision is probably adequate for this application, but if it is not then:

What is the 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. It takes two arguments and returns the value of the first argument raised to the second argument. It returns a double type value.

Can you return an integer type?

We can also return the integer type value using the power function. For this, we need to explicitly cast it to Integer.

Example 1: Calculate power of a number using a while loop

In this program, base and exponent are assigned values 3 and 4 respectively.

Example 3: Calculate the power of a number using pow () function

In this program, we use Java's Math.pow () function to calculate the power of the given base.

Example 4: Compute Power of Negative Number

Here, we have used the pow () method to compute the power of a negative number -3.

What is the power of a number?

As we all know, the power of a number is the times a number is multiplied with itself. The power of a number, in more simpler terms, is the number of times you have to multiply the number by itself.

What is the power of 0?

The power of 0 will always give the result as 1, no matter what the number is, unless if it is undefined or infinite.

How to write a method in Java?

To write a method, raising a number to the second power. For example: Then you have to add the number 2 to the result. For example: if a user types in the number 2, then the numbers 4 and 6 have to be displayed in the console. if a user types in the number 3, then the numbers 9 and 11 have to be displayed in the console.

What does "to write a method" mean?

To write a method, raising a number to the second power. For example:

Approach-1: How to find power of a number in Java using for loop

Here, We have taken for loop for (int i = 1; i <= power; i++) to iterate from 1 to power (In the example we have taken 4, So from 1 to 4) given by the user.

Approach-2 (Java program to find the power of a number using while loop)

Here, We have taken while loop while (power != 0) to iterate till power value becomes 1.

Approach-3: Java program to find the power of a number using Math.pow ( ) function

In this program, we have taken the predefined function pow ( ) of Math class. We can find the power of a given number directly by using pow ( ) function.

What is a math.pow function?

The java.lang.Math .pow () is used to calculate a number raise to the power of some other number. This function accepts two parameters and returns the value of first parameter raised to the second parameter. There are some special cases as listed below:

What happens if the second parameter is 1.0?

If the second parameter is 1.0 then the result will be same as that of the first parameter.

Java Program to find Power of a Number Using For Loop

This program allows the user to enter a Number and exponent value. By using these values, this Java program calculates the Power of a given number using For Loop.

Java Program to find Power of a Number Using While Loop

This Java program calculates the power of any given number using While Loop.