Question: Write a python function that takes a string as input, and returns a dictionary of frequencies of all the characters in the string. For example:

Write a python function that takes a string as input, and returns a dictionary of frequencies of all the characters in the string. For example:

freq("dabcabcdbbcd") would return {"d":3, "a":2, "b":4, "c":3}. Then write a driver to demonstrate your function.

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