Mutable Int

MutableInt.java

/**
 * Private inner class for sorting.
 *
 * @author dany
 */
public final class MutableInt implements Comparable<MutableInt> {
    public int value = 0;

    public MutableInt(int value) {
        this.value = value;
    }

    /**
     * inc value
     */
    public void increment() {
        ++value;
    }

    @Override
    public int compareTo(MutableInt o) {
        return value - o.value;
    }
}