점심 선택기

Source: Dev.to

점심 선택 프로그램 만들기

이 실습에서는 점심 옵션을 관리하는 프로그램을 만들게 됩니다. 점심 배열을 다루고, 배열에 항목을 추가·제거하며, 무작위로 점심 옵션을 선택하는 기능을 구현합니다.

// create an empty array
let lunches = [];

// add a lunch to the end of the array
function addLunchToEnd(arr, lunchItem) {
  arr.push(lunchItem);
  console.log(`${lunchItem} added to the end of the lunch menu.`);
  return arr;
}

// add a lunch to the beginning of the array
function addLunchToStart(arr, lunchItem) {
  arr.unshift(lunchItem);
  console.log(`${lunchItem} added to the beginning of the lunch menu.`);
  return arr;
}

// remove the last lunch item
function removeLastLunch(arr) {
  if (arr.length === 0) {
    console.log("No lunches to remove.");
    return arr;
  }
  const removed = arr.pop();
  console.log(`${removed} removed from the end of the lunch menu.`);
  return arr;
}

// remove the first lunch item
function removeFirstLunch(arr) {
  if (arr.length === 0) {
    console.log("No lunches to remove.");
    return arr;
  }
  const removed = arr.shift();
  console.log(`${removed} removed from the start of the lunch menu.`);
  return arr;
}

// get a random lunch item
function getRandomLunch(arr) {
  if (arr.length === 0) {
    console.log("No lunches available.");
    return;
  }
  const randomIndex = Math.floor(Math.random() * arr.length);
  const item = arr[randomIndex];
  console.log(`Randomly selected lunch: ${item}`);
}

// show the current lunch menu
function showLunchMenu(arr) {
  if (arr.length === 0) {
    console.log("The menu is empty.");
    return;
  }
  console.log(`Menu items: ${arr.join(", ")}`);
}