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Kotlin Program to Calculate Power of Number With Example - Tutorialwing

Kotlin Program to Calculate Power of Number With Example

In this post, we will go through Kotlin program to calculate power (b) of given number (a).

For example,

Case 1 –
Input:
a = 4, b = 5

Output:
1024

Case 2 –

Input:
a = 2, b = 3

Output:
8

There are several ways using which you can find power of number.

  1. Using while Loop
  2. Using for Loop
  3. Using pow Function

1. Calculate Power of Given Number (While Loop)

Sourcecode –

import java.util.*

fun main() {

    val read = Scanner(System.`in`)

    println("Enter a:")
    val a = read.nextInt()

    println("Enter b:")
    var b = read.nextInt()

    var res = 1
    while (b != 0) {
        res *= a
        b--
    }

    println("Power = $res")
}

When you run the program, output will be

Enter a:
12
Enter b:
3
Power = 1728
Explanation:

We calculated power by multiplying a by b times using while loop in Kotlin

2. Calculate Power of Given Number (for Loop)

Sourcecode –


import java.util.*

fun main() {

    val read = Scanner(System.`in`)

    println("Enter a:")
    val a = read.nextInt()

    println("Enter b:")
    val b = read.nextInt()

    var res = 1
    for(i in 1..b) {
        res *= a
    }

    println("Power = $res")
}

When you run the program, output will be

 Enter a:
 10
 Enter b:
 5
 Power = 100000
 
Explanation:

We calculated power by multiplying a by b times using for loop in Kotlin

3. Calculate Power Using pow function

Now, we will use pow function to calculate power (b) of number (a).

import java.util.*
import kotlin.math.pow

fun main() {

    val read = Scanner(System.`in`)

    println("Enter a:")
    val a = read.nextInt()

    println("Enter b:")
    val b = read.nextInt()

    val res = a.toDouble().pow(b)

    println("Power = $res")
}

 Enter a:
 12
 Enter b:
 5
 Power = 248832.0
 

Here, we used pow function to calculate power of number.

Thus, we went through different kotlin program to calculate power (b) of given number (a).