import Foundation
/// Converts an integer to a binary string with leading zeros.
/// - Parameters:
/// - num: The integer value to convert.
/// - bits: The target bit width determining the number of leading zeros.
/// - Returns: A zero-padded binary string.
func intToBinary(_ num: Int, bits: Int) -> String {
// 1. Convert the integer to a binary string using radix 2
let binaryString = String(num, radix: 2)
// 2. Pad with leading zeros if the string is shorter than the requested bit width
if binaryString.count < bits {
let padding = String(repeating: "0", count: bits - binaryString.count)
return padding + binaryString
}
return binaryString
}
// MARK: - Program Execution
// Define the data provided
let num = 153
// 1. Convert to an 8-bit binary representation (153 = 10011001 in binary)
let binStr8 = intToBinary(num, bits: 8)
// 2. Convert to a 16-bit binary representation (0000000010011001)
let binStr16 = intToBinary(num, bits: 16)
// Display the results
print("Original Integer: \(num)")
print("Binary (8-bit) : \(binStr8)")
print("Binary (16-bit) : \(binStr16)")
/*
run:
Original Integer: 153
Binary (8-bit) : 10011001
Binary (16-bit) : 0000000010011001
*/
