USB Memory

The Actual Memory Size of Your USB Flash Drive

Challenge Difficulty: Easy | Estimated completion time: ~10 minutes

Create a function that takes the memory size (ms) as an argument and returns the actual memory size.

Examples

actualMemorySize("32GB")
output = "29.76GB"
 
actualMemorySize("2GB")
output = "1.86GB"
 
actualMemorySize("512MB")
output = "476MB"

Notes

• The actual storage loss on a USB device is 7% of the overall memory size!
• If the actual memory size was greater than 1 GB, round your result to two decimal places.
• If the memory size after adjustment is smaller then 1 GB, return the result in MB.
• For the purposes of this challenge, there are 1000 MB in a Gigabyte.

Solution

Python

def actual_memory_size(memory_size: str) -> str: """Calculate the actual memory size after 7% storage loss. Args: memory_size: Memory size string (e.g., "32GB" or "512MB") Returns: Actual memory size as a string """ if memory_size.endswith("GB"): size_gigabytes = float(memory_size[:-2]) size_megabytes = size_gigabytes * 1000 else: size_megabytes = float(memory_size[:-2]) actual_megabytes = size_megabytes * 0.93 if actual_megabytes >= 1000: actual_gigabytes = actual_megabytes / 1000 return f"{actual_gigabytes:.2f}GB" else: return f"{int(actual_megabytes)}MB" if __name__ == "__main__": print(actual_memory_size("32GB")) # 29.76GB print(actual_memory_size("2GB")) # 1.86GB print(actual_memory_size("512MB")) # 476MB

Output