ArrayUtil.java Source code

Introduction

Here is the source code for ArrayUtil.java

Source

//package util;

import java.util.List;

/**
 *  Collection of helpful, static array procedures. These should be part of the JDK.  
 * 
 * @author Michael Tremel (mtremel@email.arizona.edu)
 */
public class ArrayUtil {
    /**
     * Removes an element from a an array yielding a new array with that data.
     * 
     * @param elementData
     *            original array
     * @param index
     *            item to remove
     * @return new array sized to fit
     */
    public static String[] removeElement(String[] elementData, int index) {
        int size = elementData.length;
        String[] newData = new String[size - 1];

        int numMoved = size - index - 1;
        if (numMoved > 0)
            System.arraycopy(elementData, index + 1, newData, index, numMoved);

        elementData = null; // let the gc work
        return newData;
    }

    /**
     * Joins a List<String> with a symbol into a single String. Why isn't
     * this part of List? Blah.
     * 
     * @param arguments
     *            segments to be joined
     * @param symbol
     *            what the segments will be joined with
     * @return joined String of all the arguments
     */
    public static final String joinArguments(List<String> arguments, String symbol) {
        StringBuilder toReturn = new StringBuilder();

        for (String s : arguments)
            toReturn.append(s + symbol);

        return toReturn.toString();
    }
}