SideOfZero.java

import java.util.Random;

import com.google.caliper.Runner;
import com.google.caliper.SimpleBenchmark;

public class SideOfZero {

    public static class Benchmark1 extends SimpleBenchmark {
        private Random r;
        private int[] nums = new int[2000];

        public void setUp() {
            r = new Random();
            for(int i = 0; i < 2000; i++) {
                nums[i] = r.nextInt();
            }
        }

        public int timeXOR(int reps) {
            int total = 0;
            for(int i = 0; i < reps; i++) {
                for(int j = 0; j < 1000; j++) {
                    if(nums[2*j] == 0 || nums[2*j+1] == 0) {
                        // nothing
                    } else if((nums[2*j] ^ nums[2*j+1]) < 0) {
                        total++;
                    } else {
                        total--;
                    }
                }
            }
            return total;
        }

        public int timeIfs(int reps) {
            int total = 0;
            for(int i = 0; i < reps; i++) {
                for(int j = 0; j < 1000; j++) {
                    if(nums[2*j] == 0 || nums[2*j+1] == 0) {
                        // nothing
                    } else if((nums[2*j] > 0 && nums[2*j+1] > 0) ||
                            (nums[2*j] < 0 && nums[2*j+1] < 0)) {
                        total++;
                    } else {
                        total--;
                    }
                }
            }
            return total;
        }
    }

    public static void main(String... args) {
        Runner.main(Benchmark1.class, args);
    }
}