sdmcraft

import java.util.ArrayList;
import java.util.List;
class Solution {
    public boolean canFinish(int numTasks, int[][] prerequisites) {
         ...
        for (int i = 0; i < numTasks; i++) {
            if (adjacencyList[i] != null) {
                return false;
            }
        }

sdmcraft

import java.util.ArrayList;
import java.util.List;
class Solution {
    public boolean canFinish(int numTasks, int[][] prerequisites) {
        List<Integer>[] adjacencyList = new ArrayList[numTasks];
        int[] prereqCount = new int[numTasks];
        for (int i = 0; i < prerequisites.length; i++) {
            if(adjacencyList[prerequisites[i][1]] == null) {
                adjacencyList[prerequisites[i][1]] = new ArrayList<>();
            }

sdmcraft

class Stream {
    constructor() {
        this.source = []; // Queue to hold incoming events
        this.operations = []; // List of transformations (filter, map)
        this.reduction = null; // Stores reduction function (if any)
        this.isProcessing = false; // Prevents duplicate processing
        this.totals = {}; // Object to track totals by category
    }

    /**

sdmcraft

/**
 * Restaurant CQRS and CDC Example
 *
 * This file demonstrates the Command Query Responsibility Segregation (CQRS)
 * and Change Data Capture (CDC) patterns using a restaurant analogy.
 */

// ===== Event Emitter (simulating a message bus) =====
const EventEmitter = require('events');