Popcorn Hack 1:
- Ex. 1: Yes, it is binary
- Ex. 2: No, it’s not binary
- Ex. 3: Yes, it is binary
Popcorn Hack 2:
- Ex. 1:
1101
- Ex. 2:
010
- Ex. 3:
1110
Popcorn Hack
- 1.2: true
- 2.2: false
- 3.2: true
Homework hack 1
```
def decimal_to_binary(decimal):
"""Converts a decimal number to binary (supports negatives)."""
if decimal == 0:
return "0"
is_negative = decimal < 0
decimal = abs(decimal)
binary = ""
while decimal > 0:
binary = str(decimal % 2) + binary
decimal //= 2
return "-" + binary if is_negative else binary
def binary_to_decimal(binary_str):
"""Converts a binary string to a decimal number (supports negatives)."""
is_negative = binary_str.startswith("-")
if is_negative:
binary_str = binary_str[1:]
decimal = 0
for digit in binary_str:
decimal = decimal * 2 + int(digit)
return -decimal if is_negative else decimal
# Test cases
print("Decimal to Binary:")
print("10 ->", decimal_to_binary(10)) # 1010
print("-10 ->", decimal_to_binary(-10)) # -1010
print("0 ->", decimal_to_binary(0)) # 0
print("\nBinary to Decimal:")
print("1010 ->", binary_to_decimal("1010")) # 10
print("-1010 ->", binary_to_decimal("-1010")) # -10
print("0 ->", binary_to_decimal("0")) # 0
```
Homework hack 2
```
import time
valid_difficulties = ["easy", "medium", "hard"]
difficulty = input("Enter difficulty (easy, medium, hard): ").lower().strip()
while difficulty not in valid_difficulties:
print("Please enter a valid difficulty level.")
time.sleep(0.5)
difficulty = input("Enter difficulty (easy, medium, hard): ").lower().strip()
print("Difficulty set to:", difficulty)
```