Calculator Text

Challenge Difficulty: Medium | Estimated completion time: ~20 minutes

At school, we used to play with our calculators and send each other secret messages. The trick was to enter a special number and turn the calculator upside-down.

Like saying hello, you’d type in the calculator 07734 and turn it upside down:

Given a number, create a function that converts it into a word by turning the integer 180 degrees around.

Examples

turnCalc(707)
output = "LOL"
 
turnCalc(5508)
output = "BOSS"
 
turnCalc(3045)
output = "SHOE"
 
turnCalc(07734)
output = "HELLO"

Number to Letter Mapping

number	letter
1	I
2	Z
3	E
4	H
5	S
6	G
7	L
8	B
9	-
0	O

Notes

• Convert to uppercase words.
• Ignore dots.

Solution

Python

def turn_calc(number: int) -> str: """Convert calculator number to upside-down text. Args: number: Number to convert Returns: Upside-down text representation """ mapping = { "0": "O", "1": "I", "2": "Z", "3": "E", "4": "H", "5": "S", "6": "G", "7": "L", "8": "B", "9": "-" } number_string = str(number).replace(".", "") reversed_string = number_string[::-1] return "".join(mapping[digit] for digit in reversed_string) if __name__ == "__main__": print(turn_calc(707)) # LOL print(turn_calc(5508)) # BOSS print(turn_calc(3045)) # SHOE print(turn_calc(7734)) # HELLO

Output