Data structures unique_values(a_dict:dict)-> dict This function will receive a single dictionary parameter known as a_dict. a_dict will contain a single letter as a string and numbers as values. This function is supposed to search a_dict to find all values that appear only once in the a_dict. The function will create another dictionary named to_ret. For all values that appear once in a_dict the function will add the value as a key in to_ret and set the value of the key to the key of the value in a_dict (swap the key-value pairs, since a_dict contains letters to numbers, to_ret will contain Numbers to Letters). Finally, the function should return to_ret. Example: a_dict: {'X': 2, 'Y': 5, 'N': 2, 'L': 2, 'W': 1, 'G': 0, 'R': 1}
Expected: {5: 'Y', 0: 'G'} a_dict: {'Z': 3, 'P': 3, 'E': 2, 'G': 0, 'T': 5, 'L': 1, 'Q': 0}
to_ret: {2: 'E', 5: 'T', 1: 'L'} a_dict: {'E': 3, 'X': 3}
to_ret: {} a_dict: {'G': 3, 'D': 3, 'C': 4, 'Q': 1, 'H': 1, 'M': 2, 'Z': 1, 'W': 3}
to_ret: {4: 'C', 2: 'M'} a_dict: {'O': 2, 'T': 1, 'L': 5, 'W': 5, 'Z': 4, 'M': 5, 'B': 4, 'D': 0, 'F': 3, 'E': 1}
to_ret: {2: 'O', 0: 'D', 3: 'F'}

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Introduction to Template

A template in C++ programming helps to pass data type as a parameter to make the code reusable. The goal is to write a generic code that can be reused for specific types depending upon the need.