Learning Goal: I’m working on a algorithms & data structures multi-part question

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Learning Goal: I’m working on a algorithms & data structures multi-part question and need an explanation and answer to help me learn.
package algs52; // section 5.2
import java.util.HashSet;
import stdlib.*;
// Create a spell checker that find all “misspelled” words (e.g. non-existing words).
// Compare performance of the TST and Trie on various dictionary sizes.
// Download and install the following files into your algs4/data directory:
// – https://introcs.cs.princeton.edu/java/data/commonw… 74K words
// – https://introcs.cs.princeton.edu/java/data/wordlis… words
// – https://introcs.cs.princeton.edu/java/data/words.u… 645K words
//
// Expected output should be similar in performance:
//
// TrieST | TST
// Words Time | Words Time %
// 23699 0.40 | 23699 0.18 43%
// 25913 0.53 | 25913 0.34 63%
// 18075 1.15 | 18075 0.86 74%
public class hw4
{
public static HashSet TrieFilter(String dictionary_file, String text_file)
{
// TODO: Create a Trie from the dictionary, and find all non-existing words in the input text file.
HashSet filteredWords = new HashSet();
return filteredWords;
}
public static HashSet TSTFilter(String dictionary_file, String text_file)
{
// TODO: Create a TST from the dictionary, and find all non-existing words in the input text file.
HashSet filteredWords = new HashSet();
return filteredWords;
}

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