问已关闭将单词追加到单词列表

EN

wordList[wordCount-1] = word;

  import java.io.*;
import java.util.*;

public class Project2
{
    static final int INITIAL_CAPACITY = 10;
    public static void main (String[] args) throws Exception
    {
        // ALWAYS TEST FIRST TO VERIFY USER PUT REQUIRED INPUT FILE NAME ON THE COMMAND LINE
        if (args.length < 1 )
        {
            System.out.println("\nusage: C:\\> java Project2 <input filename>\n\n"); // i.e. C:\> java Project2 dictionary.txt
            System.exit(0);
        }
        int[] histogram = new int[0]; // histogram[i] == # of words of length n

        /* array of String to store the words from the dictionary. 
            We use BufferedReader (not Scanner). With each word read in, examine it's length and update word length frequency histogram accordingly.
        */

        String[] wordList = new String[INITIAL_CAPACITY];
        int wordCount = 0;
        BufferedReader infile = new BufferedReader( new FileReader(args[0]) );
        while ( infile.ready() )
        {
            String word = infile.readLine();
            // # # # # # DO NOT WRITE/MODIFY ANYTHING ABOVE THIS LINE # # # # #
            if (wordCount == wordList.length)
                wordList = upSizeArr(wordList);
            // test to see if list is full. If needed do an up size (just like Lab#3)

            wordList[wordCount++] = word;

            // now you may safely append word onto list and incr count
                int wordLength = word.length();
                if (word.length () > histogram.length)
                    histogram = upSizeHisto(histogram, wordLength);
            // look at the word length and see if the histogram length is AT LEAST
            // word length + 1. If not, you must upsize histogram to be EXACTLY word length + 1
            histogram[word.length()-1]++;

            // now you can increment the counter in the histogram for this word's length

            //  # # # # # DO NOT WRITE/MODIFY ANYTHING BELOW THIS LINE  # # # # #
        } //END WHILE INFILE READY
        infile.close();

        wordList = trimArr( wordList, wordCount );
        System.out.println( "After final trim: wordList length: " + wordList.length + " wordCount: " + wordCount );

        // PRINT WORD LENGTH FREQ HISTOGRAM
        for ( int i = 0; i < histogram.length ; i++ )
            System.out.format("words of length %2d  %d\n", i,histogram[i] );

    } // END main

    // YOU MUST CORRECTLY COPY THE STRING REFS FROM THE OLD ARR TO THE NEW ARR
    static String[] upSizeArr( String[] fullArr )
    {   
        String [] newArr = new String [fullArr.length*2];
        for (int count = 0; count < fullArr.length ; count++)
        {
            newArr[count] = fullArr[count];

        }


        return newArr; // just to make it complie you change as needed
    }
    static String[] trimArr( String[] oldArr, int count )
    {
        String[] newArr = new String[count];


        for ( count = 0; count < newArr.length ; count++)
        {
            newArr[count] = oldArr[count];

        }


        return newArr;  //return null; // just to make it complie you change as needed
    }

    // YOU MUST CORRECTLY COPY THE COUNTS FROM OLD HISTO TO NEW HISTO
    static int[] upSizeHisto( int[] oldArr, int newLength )
    {
        int [] newHisto= new int[newLength];


        if (oldArr.length > 1)
        {
        for (int count = 0; count < oldArr.length  ; count++)
        {
            newHisto[count] = oldArr[count];

        }
        }

        return newHisto; // just to make it complie you change as needed
    }
} // END CLASS PROJECT#2