Question

Complete the code to translate a hexadecimal number into a decimal value.

def hexToDec(hexString):
hexToDecDictionary = {‘0’:0, ‘1’:1, ‘2’:2, ‘3’:3, ‘4’:4, ‘5’:5, ‘6’:6, ‘7’:7, ‘8’:8, ‘9’:9,
‘A’:10, ‘B’:11, ‘C’:12, ‘D’:13, ‘E’:14, ‘F’:15}

Answer 1

The hexToDec() function converts a hexadecimal string to its decimal value by iterating over each character, converting it to a decimal using a dictionary, and accumulating the result considering the base-16 place value.

Step-by-step explanation:

To complete the code that translates a hexadecimal number into a decimal value in Python, you will need to iterate over each character in the provided hexadecimal string, convert it to the corresponding decimal value using a dictionary, and accumulate the result according to the base-16 place value system.

Here is a step-by-step example of how you can complete the function:

1. Initialize a variable to keep track of the decimal result, starting at 0.
2. Convert the hexadecimal string to uppercase to match the dictionary keys.
3. Iterate over each character in the hexadecimal string starting from the left (most significant digit).
4. Multiply the current decimal result by 16.
5. Use the character to look up the decimal value in the hexToDecDictionary and add it to the result.
6. Return the accumulated decimal result once all hexadecimal digits have been processed.

The completed function may look like this:

def hexToDec(hexString):hexToDecDictionary = {'0':0, '1':1, '2':2, '3':3, '4':4, '5':5, '6':6, '7':7, '8':8, '9':9,'A':10, 'B':11, 'C':12, 'D':13, 'E':14, 'F':15}decimalResult = 0hexString = hexString.upper()for char in hexString:decimalResult = decimalResult * 16 + hexToDecDictionary[char]return decimalResult