object BinaryConverter {
/** Converts an integer to a binary string with leading zeros
* - num: The integer value to convert
* - bits: The target bit width determining the leading zeros
*/
def intToBinary(num: Int, bits: Int): String = {
// 1. Convert the integer to its raw binary string representation
val binaryStr = Integer.toBinaryString(num)
// 2. Pad with leading zeros using functional collection methods:
// - reverse the string so padding applies to the front (which becomes the end temporarily)
// - padTo pads the collection with '0' until it reaches the specified 'bits' length
// - reverse it back to normal orientation
binaryStr.reverse.padTo(bits, '0').reverse
}
def main(args: Array[String]): Unit = {
// Define the data provided
val num: Int = 153
// 1. Convert to an 8-bit binary representation (153 fits within 8 bits: 0 to 255)
val binStr8 = intToBinary(num, 8)
// 2. Convert to a 16-bit binary representation to demonstrate wider padding
val binStr16 = intToBinary(num, 16)
// Display the results
println(s"Original Integer: $num")
println(s"Binary (8-bit) : $binStr8")
println(s"Binary (16-bit) : $binStr16")
}
}
/*
run:
Original Integer: 153
Binary (8-bit) : 10011001
Binary (16-bit) : 0000000010011001
*/
