Boyer-Moore vs Naive substring search

CPU

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 60
model name	: Intel(R) Core(TM) i7-4771 CPU @ 3.50GHz
stepping	: 3
microcode	: 0x27
cpu MHz		: 2673.855
cache size	: 8192 KB
physical id	: 0
siblings	: 8
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm cpuid_fault invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt dtherm ida arat pln pts md_clear flush_l1d
bugs		: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit
bogomips	: 6999.91
clflush size	: 64
cache_alignment	: 64
address sizes	: 39 bits physical, 48 bits virtual
power management:

java versions

Java 8:
openjdk version "1.8.0_232-ea"
OpenJDK Runtime Environment (build 1.8.0_232-ea-8u232-b09-0ubuntu1-b09)
OpenJDK 64-Bit Server VM (build 25.232-b09, mixed mode)

Java 11:
openjdk version "11.0.5-ea" 2019-10-15
OpenJDK Runtime Environment (build 11.0.5-ea+10-post-Ubuntu-0ubuntu1)
OpenJDK 64-Bit Server VM (build 11.0.5-ea+10-post-Ubuntu-0ubuntu1, mixed mode, sharing)

long-11.txt

# Run complete. Total time: 00:16:03

Benchmark                      Mode  Samples   Score  Score error  Units
c.z.MyBenchmark.boyerMoore    thrpt      200  92.854        0.547  ops/s
c.z.MyBenchmark.java          thrpt      200  42.131        0.269  ops/s

long-8.txt

# Run complete. Total time: 00:16:04

Benchmark                      Mode  Samples   Score  Score error  Units
c.z.MyBenchmark.boyerMoore    thrpt      200  92.897        0.531  ops/s
c.z.MyBenchmark.java          thrpt      200  49.282        0.424  ops/s

short-11.txt

# Run complete. Total time: 00:16:03

Benchmark                      Mode  Samples    Score  Score error  Units
c.z.MyBenchmark.boyerMoore    thrpt      200  118.220        0.526  ops/s
c.z.MyBenchmark.java          thrpt      200   77.606        0.919  ops/s

short-8.txt

# Run complete. Total time: 00:16:04

Benchmark                      Mode  Samples    Score  Score error  Units
c.z.MyBenchmark.boyerMoore    thrpt      200  115.957        0.971  ops/s
c.z.MyBenchmark.java          thrpt      200   83.801        0.990  ops/s

test strings

Short:
Hello, world! I am a string; perhaps I can ananate how, for ananananananars, and more!

Long:
Hello, nanana world! I anana am a string; perhaps nanas I can ananate how, anana for ananananananars, and nanas more!