(1) assumes that each record has the following data items: telephone number, user name, address. (2) First, from the data file old.txt (their current built) read into the record, the second is randomly generated by the system of records and the records to new.txt file and display to the screen, record Article number not less than 30, then each phone number and user name to build the hash table key. (3) were used to detect pseudo-random re-hashing and re-hash method to resolve the conflict. (4) to find and display a given number of records find and show records of a given user name. (5) will not save the results to find the result file Out.txt, display the search results before, have prompted the statement.

123.txt

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