Q:

Kotlin program to convert decimal to binary

YasminRadwan26
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2022-07-12
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We are given a decimal number and we will create a Kotlin program to convert decimal number to binary.

To convert decimal number to binary, we will recursively divide the decimal number by 2 and save the remainder found till the decimal number vanquishes.

Example:

    Input:
    Decimal number = 12

    Recursive division:
Number Quotient Remainder
12 6 0
6 3 0
3 1 1
1 0 1 

    Output:
    Here, we will read the remainders in reverse order 
    which is the binary equivalent i.e. 
    1100 is the binary conversion for 12.
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YasminRadwan26
2022-07-12
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Program to convert decimal to binary in Kotlin

package com.includehelp.basic

import java.util.*

/* function to convert given decimal number into Binary */
fun getBinaryNumber(decimalNumber: Int): String {
    var decimalNumber = decimalNumber
    val binaryStr = StringBuilder()
    
    while (decimalNumber > 0) {
        val r = decimalNumber % 2
        decimalNumber /= 2
        binaryStr.append(r)
    }
    
    return binaryStr.reverse().toString()
}

// Main Method Entry Point of Program
fun main(arg: Array<String>) {
    val sc = Scanner(System.`in`)
    
    println("Enter Decimal Number  : ")
    //Input Decimal Number
    val decimalNumber: Int = sc.nextInt()
    
    // Call function to Convert Decimal into binary
    val binaryNumber = getBinaryNumber(decimalNumber)
    // Print Binary Number
    println("Binary Number : $binaryNumber")
}

Output

Run 1:
Enter Decimal Number  :
15
Binary Number : 1111
-----
Run 2:
Enter Decimal Number  :
12345
Binary Number : 11000000111001
----
Run 3:
Enter Decimal Number  :
545654
Binary Number : 10000101001101110110

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