package edu.rice.hj.example.comp322.assignments.hw2;

import static edu.rice.hj.Module1.doWork;

/**
 * This class contains an implementation of a sum reduction
 * that implements the GeneralizedReduceApp interface.
 * <p>
 * The call to doWork(1) in the combine() method assumes that each call to
 * combine() takes 1 unit of time, and ignores the cost all other computations.
 * <p>
 * This is a test class for your homework and should not be modified.
 *
 * @author Vivek Sarkar (vsarkar@rice.edu)
 */
public class SumReduction implements GeneralizedReduceApp<Integer> {

    /**
     * {@inheritDoc}
     * <p>
     * sample implementation of client interface for a sum reduction
     */
    @Override
    public Integer init() {
        return 0;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Integer combine(final Integer left, final Integer right) {
        // addition with conversion from/to Integer objects
        doWork(1);
        return left + right;
    }
}