Solution to Lab 5 for 1005ICT

Lab5.java

/**
 * @author Tate Johnson
 * @version 2008-08-20
 */
public class Lab5 {

    // Instance variable
    private double[] data;

    /**
     * Constructor
     * 
     * @param length Length of array
     * @param val Value to be populated at each index
     */
    public Lab5(int length, double val) {
        data = new double[length];
        for (int i = 0; i < data.length; i++) {
            data[i] = val;
        }
    }
    
    /**
     * Constructor
     * 
     * @param data A double array
     */
    public Lab5(double[] data) {
        this.data = data;
    }
    
    /**
     * @return Object's double array
     */
    public double[] getArray() {
        return data;
    }
    
    /**
     * @return Length of object's double array
     */
    public int getLength() {
        return data.length;
    }
    
    /**
     * @param pos Index position of double array
     * @param val Value to be replaced at <code>pos</code>
     */
    public void setVal(int pos, double val) {
        // Ensure that pos is a legal position within array
        if (pos < data.length && pos >= 0) {
            data[pos] = val;
        }
    }
    
    public void print() {
        String toPrint = new String();
        for (int i = 0; i < data.length; i++) {
            // Not last position in array
            if (i != data.length - 1) {
                toPrint += data[i] + ", ";
            }
            else {
                toPrint += data[i];
            }
        }
        System.out.println("{" + toPrint + "}");
    }
    
    /**
     * @param val Double value to be compared against the value's in object
     * @return Number of values in object that's greater than <code>val</code>
     */
    public int greaterCnt(double val) {
        int count = 0;
        for (double d : data) {
            if (d > val) {
                count++;
            }
        }
        return count;
    }
    
    /**
     * @return Index position of greatest value in object's double array
     */
    public int max() {
        int pos = 0;
        double max = 0;
        for (int i = 0; i < data.length; i++) {
            if (data[i] > max) {
                max = data[i];
                pos = i;
            }
        }
        return pos;
    }
    
    /**
     * @return copyData An element for element copy of object's double array
     */
    public double[] copy() {
        double[] copyData = new double[data.length];
        for (int i = 0; i < copyData.length; i++) {
            copyData[i] = data[i];
        }
        return copyData;
    }
    
    public void setRandom() {
        for (int i = 0; i < data.length; i++) {
            data[i] = Math.random();
        }
    }
    
    /**
     * @return Integer array copy of object's double array
     */
    public int[] toInt() {
        int[] toIntData = new int[data.length];
        for (int i = 0; i < toIntData.length; i++) {
            // Instantiate new double object and assign returned int value
            // to position in array
            toIntData[i] = new Double(data[i]).intValue();
        }
        return toIntData;
    }

}