Frequency symbol table. Develop a data type FrequencyTable that supports the following operations: click() and count (), both of which take string arguments. The data type keeps track of the number of times the click() operation has been called with a given string as an argument. The click() operation increments the count by 1, and the count () operation returns the count, possibly 0. Clients of this data type might include a web-traffic analyzer, a music player that counts the number of times each song has been played, phone software for counting calls, and so forth.
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