JMH: replace vs tacc

package questionresolver;

import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import java.util.concurrent.TimeUnit;

@State(Scope.Thread)
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public class QuestionResolver {
    public static final char COLOR_CHAR = '\u00A7';
    public static final String COLORIZE_ME
            = "&7Lorem &eipsum &rdolor &nsit &kamet, &aconsectetur &dadipiscing "
            + "&4elit. &7Aliquam &9cursus, &bmetus &3ut &ffaucibus &dconsectetur, "
            + "&5lectus &3enim &0porttitor &1justo, &oquis &2condimentum &adui "
            + "&marcu &8et &dex. &pSed &6mi &9mi, &3consequat &feu &rsagittis "
            + "&2at, &9interdum &beget &7dolor. &kSed &lmollis &cipsum &9a "
            + "&4gravida &2laoreet. &8Ut &bligula &drisus, &1dignissim &8at "
            + "&agravida &4id, &7blandit &8eget &9metus... &r& other words";
    public static final String NO_COLORS
            = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. "
            + "Aliquam cursus, metus ut faucibus consectetur, lectus enim "
            + "porttitor justo, quis condimentum dui arcu et ex. Sed mi mi, "
            + "consequat eu sagittis at, interdum eget dolor. Sed mollis ipsum "
            + "a gravida laoreet. Ut ligula risus, dignissim at gravida id, "
            + "blandit eget metus.";

    @Benchmark
    @OperationsPerInvocation(1)
    public String stringReplace() {
        return QuestionResolver.COLORIZE_ME.replace('&', QuestionResolver.COLOR_CHAR);
    }

    @Benchmark
    @OperationsPerInvocation(1)
    public String tacc() {
        return QuestionResolver.translateAlternateColorCodes('&', QuestionResolver.COLORIZE_ME);
    }

    @Benchmark
    @OperationsPerInvocation(1)
    public String NCstringReplace() {
        return QuestionResolver.NO_COLORS.replace('&', QuestionResolver.COLOR_CHAR);
    }

    @Benchmark
    @OperationsPerInvocation(1)
    public String NCtacc() {
        return QuestionResolver.translateAlternateColorCodes('&', QuestionResolver.NO_COLORS);
    }

    public static String translateAlternateColorCodes(char altColorChar, String textToTranslate) {
        char[] b = textToTranslate.toCharArray();
        for (int i = 0; i < b.length - 1; i++) {
            if (b[i] == altColorChar && "0123456789AaBbCcDdEeFfKkLlMmNnOoRr".indexOf(b[i + 1]) > -1) {
                b[i] = QuestionResolver.COLOR_CHAR;
                b[i + 1] = Character.toLowerCase(b[i + 1]);
            }
        }
        return new String(b);
    }

    public static void main(String[] args) throws RunnerException {
        Options opt = new OptionsBuilder()
                .include(QuestionResolver.class.getSimpleName())
                .warmupIterations(10)
                .measurementIterations(50)
                .forks(1)
                .build();

        new Runner(opt).run();
    }
}