def binary_to_hex(number):
"""
Convert a 16-bit binary number to hexadecimal.
TODO: Implement this function.
:param number: A bitstring representing the number to convert
:return: A hexadecimal string, the converted number
"""
hex_str = ""
str_pieces = [number[i:i + 4] for i in range(0, len(number), 4)]
for i in range(len(str_pieces)):
if str_pieces[i] == "1010":
hex_str = "A" + hex_str
elif str_pieces[i] == 1011:
hex_str = "B" + hex_str
elif str_pieces[i] == 1100:
hex_str = "C" + hex_str
elif str_pieces[i] == 1101:
hex_str = "D" + hex_str
elif str_pieces[i] == 1110:
hex_str = "E" + hex_str
elif str_pieces[i] == 1111:
hex_str = "E" + hex_str
else:
num = binary.binary_to_decimal("0000" + str_pieces[i])
num_str = "%d" % (num)
hex_str = num_str + hex_str
return "0x" + hex_str[::-1]
def test11_binary_to_decimal(self):
msg = "Testing basic binary-to-decimal conversion"
self.assertEqual(bn.binary_to_decimal("01111111"), 127, msg)
def test04_binary_to_decimal(self):
msg = "Testing basic binary-to-decimal conversion"
self.assertEqual(bn.binary_to_decimal("00000101"), 5, msg)
self.assertEqual(bn.binary_to_decimal("10101000"), 168, msg)
def test10_binary_to_decimal(self):
msg = "Testing basic binary-to-decimal conversion"
self.assertEqual(bn.binary_to_decimal("10000000"), -128, msg)