Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.lang.reflect.*;

public class Main {
    /**
     * Expands an array of Objects to double of its current size. Remember to use cast to turn the result into an array of the appropriate class, i.e:
     * 
     *   <code>someArray=(SomeClass [])unlekker.util.Util.expandArray(someArray);
     * @param list Array to be expanded.
     * @return Array of Object [], must be cast to appropriate class.
     */
    static public Object expandArray(Object[] list) {
        int newSize = list.length * 2;
        Class type = list.getClass().getComponentType();
        Object temp = Array.newInstance(type, newSize);
        System.arraycopy(list, 0, temp, 0, Math.min(Array.getLength(list), newSize));
        return temp;
    }

    static public Object expandArray(Object[] list, int newSize) {
        Class type = list.getClass().getComponentType();
        Object temp = Array.newInstance(type, newSize);
        System.arraycopy(list, 0, temp, 0, Math.min(Array.getLength(list), newSize));
        return temp;
    }

    /**
     * Expands an array of floats to double its current size.
     *
     * @param f Array to be expanded.
     * @return Array of floats with f.length*2 length. 
     */
    static public float[] expandArray(float[] f) {
        int newSize = f.length * 2;
        float[] newf = new float[newSize];
        System.arraycopy(f, 0, newf, 0, Math.min(f.length, newSize));
        return newf;
    }

    /**
     * Expands the first column of a 2D array of floats to 
     * double its current size.
     *
     * @param f Array to be expanded.
     * @return Array of floats with f.length*2 length. 
     */
    static public float[][] expandArray(float[][] f) {
        int newSize = f.length * 2;
        float[][] newf = new float[newSize][];
        for (int i = 0; i < f.length; i++)
            newf[i] = f[i];
        return newf;
    }

    static public int[] expandArray(int[] f) {
        int newSize = f.length * 2;
        int[] newi = new int[newSize];
        System.arraycopy(f, 0, newi, 0, Math.min(f.length, newSize));
        return newi;
    }

    static public int[] expandArray(int[] f, int newSize) {
        int[] newi = new int[newSize];
        System.arraycopy(f, 0, newi, 0, Math.min(f.length, newSize));
        return newi;
    }

    public static float min(float[] f) {
        float min = Float.MAX_VALUE;
        for (float ff : f)
            if (ff < min)
                min = ff;
        return min;
    }
}