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Arhan Chaudhary ArhanChaudhary

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ArhanChaudhary / _fastest_rubiks_operations
Last active August 14, 2025 14:07
Fastest Rubik's cube composition and inversion operations (see https://godbolt.org/z/eYevrErG7)
NOTE: all instruction counts ignore the initial and final SIMD register load instructions
AVX2 composition: 5 instructions, averaging 700M/sec on an Intel Xeon E5-2667 v3
AVX2 inversion: 26 instructions, averaging 175M/sec on an Intel Xeon E5-2667 v3
ARM64 composition: 19 instructions, averaging 870M/sec on an Apple M4
ARM64 inversion: 48 instructions, averaging 400M/sec on an Apple M4
@ArhanChaudhary
ArhanChaudhary / Main.c
Last active August 5, 2024 04:50
Demonstrating how JNI makes true private state in Java impossible
#include <jni.h>
#include "Main.h"
JNIEXPORT jobject JNICALL Java_Main_getSecret(JNIEnv *env, jobject obj, jobject secretObj)
{
jclass cls = (*env)->GetObjectClass(env, secretObj);
jfieldID field_id = (*env)->GetFieldID(env, cls, "secret", "Ljava/lang/Object;");
jobject secret = (*env)->GetObjectField(env, secretObj, field_id);
return secret;
}
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ArhanChaudhary / keybase.md
Created April 24, 2024 00:06

Keybase proof

I hereby claim:

  • I am arhanchaudhary on github.
  • I am archandstarch (https://keybase.io/archandstarch) on keybase.
  • I have a public key ASCwCpPniMU2uwlUKUw_jDz9lwZ2lyULttFh8wLUfHIahgo

To claim this, I am signing this object:

@ArhanChaudhary
ArhanChaudhary / math_opener.py
Created October 1, 2023 22:04
pip install requests PyPDF2
import re
import webbrowser
import requests
import PyPDF2
import io
url = input("Enter the study guide URL: ")
url_raw = requests.get(url).content
url_contents = ''
with io.BytesIO(url_raw) as open_pdf_file:
@ArhanChaudhary
ArhanChaudhary / Best-of-YT.md
Last active July 4, 2024 22:13
A catalog of some of my favorite YouTube videos