/**
 * @author Qingyi Wu
 */
public final class ArrayChecker {

    public static final int NUM_ARRAY[] = {23, 67, 212343, 422, 1239, 0, 122332};

    /**
     * Core function is here! A new boolean array is created to indicate the position
     * in the number array where the element is not fixed the condition
     * @param limit any element in the parameter array whose value is <= limit will be ingnored
     * @param array numbers array which you want to do filter for
     * @return the number array that has filtered
     */
    public static int[] check(int limit, final int[] array) {

        if (array == null || array.length == 0)
            throw new IllegalArgumentException("Parameter array should not be NULL");

        //position flags
        boolean[] boolArray = new boolean[array.length];

        //Obtain the fixed length for new array
        int fixedCounter = 0;
        for (int i = 0; i < array.length; i++) {

            if (array[i] > limit) {
                boolArray[i] = !boolArray[i];
                fixedCounter ++;
            }
        }

        //fill the new array
        int[] newArray = new int[fixedCounter];
        int insertPoint = 0;
        for (int i = 0; i < boolArray.length; i++) {

            if (boolArray[i]) {
                newArray[insertPoint] = array[i];
                insertPoint++; //point to next position
            }
        }
        return newArray;
    }

    /*Only for testing*/
    public static void main(String[] args) {
        int limitValue = Integer.parseInt(args[0]);

        int[] filterdArray = ArrayChecker.check(limitValue, ArrayChecker.NUM_ARRAY);
        for (int i = 0; i < filterdArray.length; i++)
            System.out.print(filterdArray[i] + "\t");
    }
}