marttp

Two pointers: one input, opposite ends

```python3
def fn(arr):
    left = ans = 0
    right = len(arr) - 1

    while left < right:
        # do some logic here with left and right
        if CONDITION:

marttp

AI Coding Agent Guidelines (claude.md)

These rules define how an AI coding agent should plan, execute, verify, communicate, and recover when working in a real codebase. Optimize for correctness, minimalism, and developer experience.

---

Operating Principles (Non-Negotiable)

• Correctness over cleverness: Prefer boring, readable solutions that are easy to maintain.
• Smallest change that works: Minimize blast radius; don't refactor adjacent code unless it meaningfully reduces risk or complexity.

marttp

package org.doc2pdf.lambda;

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import javax.imageio.ImageIO;

marttp

Array

• Two Sum
• Best Time to Buy and Sell Stock
• Contains Duplicate
• Product of Array Except Self
• Maximum Subarray
• Maximum Product Subarray
• Find Minimum in Rotated Sorted Array

marttp

Below are the Big O performance of common functions of different Java Collections.


List                 | Add  | Remove | Get  | Contains | Next | Data Structure
---------------------|------|--------|------|----------|------|---------------
ArrayList            | O(1) |  O(n)  | O(1) |   O(n)   | O(1) | Array
LinkedList           | O(1) |  O(1)  | O(n) |   O(n)   | O(1) | Linked List
CopyOnWriteArrayList | O(n) |  O(n)  | O(1) |   O(n)   | O(1) | Array

marttp

import com.fasterxml.jackson.databind.JsonNode
import com.fasterxml.jackson.databind.ObjectMapper
import com.fasterxml.jackson.module.kotlin.KotlinModule

fun main(args: Array<String>) {
    val jsonString : String = """
{
  "authors" : [
    {
      "name" : "Kalle Jönsson",

marttp

/* CHAT STYLES */
* {
    font-family: Avenir, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto,
      Helvetica Neue, Arial, Noto Sans, sans-serif, Apple Color Emoji,
      Segoe UI Emoji, Segoe UI Symbol, Noto Color Emoji;
    letter-spacing: 0.5px;
  }
  
  .ce-chat-list {
    background-color: rgb(240, 240, 240) !important;