【綜合練習】老鼠走迷宮：實作 3 - 解答 | 程式專案

{"id":576390,"student_id":2589,"content":"{\"html\":\"\u003c!DOCTYPE html\u003e\\n\u003chtml\u003e\\n\u003chead\u003e\\n\\t\u003ctitle\u003eDocument\u003c/title\u003e\\n\u003c/head\u003e\\n\u003cbody\u003e\\n    \u003cdiv id=\\\"question\\\"\u003e\\n        \u003cp\u003e請依照以下步驟進行綜合練習：\u003c/p\u003e\\n        \u003cp\u003e1. 搭配過去學過的演算法知識（二分搜尋），來閱讀練習頁面中的 JavaScript。\u003c/p\u003e\\n        \u003cp\u003e2. 修改練習頁面中的 JavaScript，讓執行後網頁上的顯示文字與下方相同。\u003c/p\u003e\\n    \u003c/div\u003e\\n    \u003cdiv id=\\\"screenshot\\\"\u003e\\n        \u003cp\u003e題目：\u003c/p\u003e\\n        \u003cdiv id=\\\"log\\\"\u003eloading...\u003c/div\u003e\\n    \u003c/div\u003e\\n    \u003cdiv id=\\\"screenshot\\\"\u003e\\n        \u003cp\u003e解答：\u003c/p\u003e\\n        \u003cdiv id=\\\"code\\\"\u003eloading...\u003c/div\u003e\\n    \u003c/div\u003e\\n\u003c/body\u003e\\n\u003c/html\u003e\",\"css\":\"* {\\n    margin: 0;\\n    padding: 0;\\n    box-sizing: border-box;\\n    font-size: 16px;\\n}\\n\\nhtml, body {\\n    width: 100%;\\n    height: 100%;\\n    background-color: #333;\\n    padding: 10px;\\n}\\n\\np {\\n    color: white;\\n    margin-bottom: 10px;\\n}\\n\\n#log {\\n    color: #03F501;\\n    padding: 10px;\\n    border: 1px solid white;\\n    border-radius: 5px;\\n}\\n\\n#code {\\n    color: #03F501;\\n    padding: 10px;\\n    border: 1px solid white;\\n    border-radius: 5px;\\n    overflow-x: scroll;\\n}\\n\\n#question {\\n    height: 130px;\\n    border: 1px solid white;\\n    padding: 20px;\\n    margin-bottom: 10px;\\n}\\n\\n#screenshot {\\n    border: 1px solid white;\\n    padding: 20px;\\n    margin-bottom: 10px;\\n}\",\"js\":\"function binarySearchCrack(target, lowerBound, upperBound, guessFunc) {\\n  let left = lowerBound;\\n  let right = upperBound;\\n  let guess;\\n\\n  while (left \u003c= right) {\\n    guess = Math.floor((left + right) / 2);\\n\\n    if (guessFunc(guess) === target) {\\n      return guess;\\n    } else if (guessFunc(guess) \u003c target) {\\n      left = guess + 1;\\n    } else {\\n      right = guess - 1;\\n    }\\n  }\\n\\n  return null;\\n}\\n\\nconst target = 25;\\n\\nfunction guessSquareRoot(x) {\\n  return x * x;\\n}\\n\\nconst result = binarySearchCrack(target, 0, target, guessSquareRoot);\\nconsole.log(`猜測的平方根：${result}`);\\n\"}","created_at":"2023-07-28T11:11:28.984+08:00","updated_at":"2023-07-31T13:55:52.565+08:00","name":"【綜合練習】老鼠走迷宮：實作 3 - 解答","language":"web","screenshot":{"url":null},"parent_id":576389,"plugin":"(function () {\n    if (!console) {\n        console = {};\n    }\n    var old = console.log;\n    var logger = document.getElementById('log');\n    logger.innerHTML = \"\"\n    console.log = function (message) {\n        if (typeof message == 'object') {\n            logger.innerHTML += (JSON \u0026\u0026 JSON.stringify ? JSON.stringify(message) : String(message)) + '\u003cbr /\u003e';\n        } else {\n            logger.innerHTML += message + '\u003cbr /\u003e';\n        }\n    }\n})();\n\ndocument.querySelector(\"#code\").innerHTML = `\u003cpre\u003e// 二分搜尋破解函式\nfunction binarySearchCrack(target, lowerBound, upperBound, guessFunc) {\n  let left = lowerBound; // 設定左邊界\n  let right = upperBound; // 設定右邊界\n  let guess;\n\n  while (left \u003c= right) { // 當左邊界小於等於右邊界時繼續搜尋\n    guess = Math.floor((left + right) / 2); // 取得中間值作為猜測值\n\n    if (guessFunc(guess) === target) { // 若猜測值等於目標值，表示找到答案\n      return guess; // 回傳猜測值\n    } else if (guessFunc(guess) \u003c target) { // 若猜測值小於目標值，調整左邊界\n      left = guess + 1;\n    } else { // 若猜測值大於目標值，調整右邊界\n      right = guess - 1;\n    }\n  }\n\n  return null; // 若搜尋結束仍未找到答案，回傳 null\n}\n\nconst target = 25; // 目標值\n\nfunction guessSquareRoot(x) {\n  return x * x; // 猜測函式為計算平方\n}\n\nconst result = binarySearchCrack(target, 0, target, guessSquareRoot); // 呼叫二分搜尋破解函式\nconsole.log(\\`猜測的平方根：\\${result}\\`); // 輸出猜測的平方根結果\n\u003c/pre\u003e`\n","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":33,"hashid":"jzmskqry9","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}