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function palindrome(str) {

  str = str.toLowerCase();

  var regex = /[^A-Za-z0-9]/g;
  var palavraLimpa = str.replace(regex, "");


  let palavraInvertida = palavraLimpa.split("").reverse().join("")
  

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function convertToRoman(num) {
  let resultado = "";
  const array = {
    M: 1000,
    CM: 900,
    D: 500,
    CD: 400,
    C: 100,
    XC: 90,
    L: 50,

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function transformString(str) {
  let transformed = "";

  for (let i = 0; i < str.length; i++) {
    let letter = str[i];

    if (/[a-zA-Z]/.test(letter)) {
      let ascii = letter.charCodeAt(0);
      ascii += 13;

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function telephoneCheck(str) {

  // Expressão regular que verifica o se o número de telefone é válido.

  const regexTelefone = 
  /^(1\s?)?(\(\d{3}\)|\d{3})[-\s]?\d{3}[-\s]?\d{4}$/;

  return regexTelefone.test(str);

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function checkCashRegister(price, cash, cid) {

    const valoresCorrentes = {
      "PENNY": 0.01,
      "NICKEL": 0.05,
      "DIME": 0.1,
      "QUARTER": 0.25,
      "ONE": 1,
      "FIVE": 5,
      "TEN": 10,

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def arithmetic_arranger(problems, solve=False):
  
    first = ""  #Definindo o primiero número
    second = "" #Segundo... 
    third = ""
    fourth = ""
    arranged_problems = ""
    for item in problems: # For loop para começar o programa. 
      
        #error 1

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def add_time(start, duration, day=None):
  
    dia_mapa = {
        "Saturday": 0,
        "Sunday": 1,
        "Monday": 2,
        "Tuesday": 3,
        "Wednesday": 4,
        "Thursday": 5,
        "Friday": 6

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class Category:
    def __init__(self, name):
        self.name = name
        self.ledger = []

    def deposit(self, amount, description=""):
        self.ledger.append({"amount": amount, "description": description})

    def withdraw(self, amount, description=""):

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class Category:
    def __init__(self, name):
        self.name = name
        self.ledger = []

    def deposit(self, amount, description=""):
        self.ledger.append({"amount": amount, "description": description})

    def withdraw(self, amount, description=""):

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import copy
import random

class Hat:
    def __init__(self, **balls):
        self.contents = []
        for color, count in balls.items():
            self.contents.extend([color] * count)

    def draw(self, num_balls):