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52 lines
1.4 KiB
Java
52 lines
1.4 KiB
Java
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import edu.princeton.cs.introcs.StdIn;
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import edu.princeton.cs.introcs.StdOut;
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/*************************************************************************
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* Compilation: javac DeDup.java
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* Execution: java DeDup < input.txt
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* Dependencies: SET StdIn.java StdOut.java
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* Data files: http://algs4.cs.princeton.edu/35applications/tinyTale.txt
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*
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* Read in a list of words from standard input and print out
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* each word, removing any duplicates.
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*
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* % more tinyTale.txt
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* it was the best of times it was the worst of times
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* it was the age of wisdom it was the age of foolishness
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* it was the epoch of belief it was the epoch of incredulity
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* it was the season of light it was the season of darkness
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* it was the spring of hope it was the winter of despair
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*
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* % java DeDup < tinyTale.txt
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* it
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* was
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* the
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* best
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* of
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* times
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* worst
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* age
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* wisdom
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* ...
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* winter
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* despair
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*
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*************************************************************************/
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public class DeDup {
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public static void main(String[] args) {
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SET<String> set = new SET<String>();
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// read in strings and add to set
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while (!StdIn.isEmpty()) {
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String key = StdIn.readString();
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if (!set.contains(key)) {
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set.add(key);
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StdOut.println(key);
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}
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}
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}
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}
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