Question

How to convert decimal number to binary in Kotlin

Answer 1

fun decimalToBinary(decimal: Int): String {
    return decimal.toString(2)
}

fun main() {
    val decimalNumber = 41
    val binaryNumber = decimalToBinary(decimalNumber)
    
    println("Binary representation of $decimalNumber is $binaryNumber")
}

   
      
/*
run:

Binary representation of 41 is 101001
  
*/

 

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Answer 2

fun decimalToBinary(decimal: Int): String {
    var number = decimal
    val binaryString = StringBuilder()
    
    while (number > 0) {
        binaryString.append(number % 2)
        number /= 2
    }
    
    return binaryString.reverse().toString()
}

fun main() {
    val decimalNumber = 41
    val binaryNumber = decimalToBinary(decimalNumber)
    
    println("Binary representation of $decimalNumber is $binaryNumber")
}

   
      
/*
run:

Binary representation of 41 is 101001
  
*/

 

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Answer 3

fun decimalToBinary(decimal: Int): String {
    if (decimal == 0) return "0"
    if (decimal == 1) return "1"
    
    return decimalToBinary(decimal / 2) + (decimal % 2).toString()
}

fun main() {
    val decimalNumber = 41
    val binaryNumber = decimalToBinary(decimalNumber)
    
    println("Binary representation of $decimalNumber is $binaryNumber")
}

   
      
/*
run:

Binary representation of 41 is 101001
  
*/

 

70+ SQL courses for beginners and professionals