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Solved lab #3489

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917c52b
Solved lab
ZixuanLiu96 Jun 16, 2025
d8f8197
fixed some problems
ZixuanLiu96 Jun 17, 2025
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22 changes: 14 additions & 8 deletions index.html
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Original file line number Diff line number Diff line change
@@ -1,16 +1,22 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>LAB | JS Basic Algorithms</title>
</head>
<body>
</head>
<body>
<h1>LAB | JS Basic Algorithms</h1>
<br />
<br />
<p> Open the <a href="https://developer.chrome.com/docs/devtools/open/">Dev Tools console</a> to see the console output.</p>
<p>
Open the
<a href="https://developer.chrome.com/docs/devtools/open/"
>Dev Tools console</a
>
to see the console output.
</p>

<script src="index.js"></script>
</body>
</html>
</body>
</html>
139 changes: 137 additions & 2 deletions index.js
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Original file line number Diff line number Diff line change
@@ -1,7 +1,142 @@
// Iteration 1: Names and Input

const hacker1 = "Oliver";
console.log(`The driver\'s name is ${hacker1}`);
const hacker2 = "Dave";
console.log(`The navigator\'s name is ${hacker2}`);

// Iteration 2: Conditionals

if (hacker1.length > hacker2.length) {
console.log(
`The driver has the longest name, it has ${hacker1.length} characters.`
);
} else if (hacker1.length < hacker2.length) {
console.log(
`It seems that the navigator has the longest name, it has ${hacker2.length} characters.`
);
} else {
console.log(
`Wow, you both have equally long names, ${hacker1.length} characters!`
);
}

// Iteration 3: Loops
// 3.1
let hacker1WithSpace = "";
for (letter of hacker1.toUpperCase()) {
hacker1WithSpace += letter + " ";
}

const newHacker1 = hacker1WithSpace.trim();
console.log(newHacker1);
// console.log(newHacker1.length);

// 3.2
let hacker2Reverse = "";
for (let i = hacker2.length - 1; i >= 0; i--) {
hacker2Reverse += hacker2[i];
}
console.log(hacker2Reverse);

// 3.3
// if (hacker1 < hacker2) {
// console.log("The driver's name goes first.");
// } else if (hacker1 > hacker2) {
// console.log("Yo, the navigator goes first, definitely.");
// } else console.log("What?! You both have the same name?");

if (hacker1.length < hacker2.length) {
for (let i = 0; i < hacker1.length; i++) {
if (hacker1[i] === hacker2[i]) {
continue;
} else {
if (hacker1[i] < hacker2[i]) {
console.log("The driver's name goes first.");
break;
} else {
console.log("Yo, the navigator goes first, definitely.");
break;
}
}
}
} else if (hacker1.length > hacker2.length) {
for (let i = 0; i < hacker2.length; i++) {
if (hacker1[i] === hacker2[i]) {
continue;
} else {
if (hacker1[i] < hacker2[i]) {
console.log("The driver's name goes first.");
break;
} else {
console.log("Yo, the navigator goes first, definitely.");
break;
}
}
}
} else {
for (let i = 0; i < hacker1.length; i++) {
if (hacker1[i] === hacker2[i]) {
continue;
} else {
if (hacker1[i] < hacker2[i]) {
console.log("The driver's name goes first.");
break;
} else {
console.log("Yo, the navigator goes first, definitely.");
break;
}
}
}
console.log("What?! You both have the same name?");
}

// Bonus 1
const longText =
"Lorem ipsum dolor sit amet consectetur adipisicing elit. Ullam ex quam sunt. Minima recusandae ea dolorem consequuntur molestiae, animi officiis, molestias incidunt necessitatibus ad iusto ut? Ad sequi necessitatibus voluptate.";
const newText = longText.split(" ");
let etCount = 0;
newText.forEach((element) => {
if (element === "et") etCount++;
});
console.log(etCount);

// Bonus 2
function isPalindrome(word) {
const word2 = word.toLowerCase();
console.log(word2);
let word3 = "";

for (element of word2) {
if (
element === " " ||
element === "," ||
element === "!" ||
element === "?"
) {
element = "";
word3 += element;
} else word3 += element;
}

console.log(word3);

if (word3.length % 2 !== 0) {
const middleIndex = (word3.length - 1) / 2;

for (let i = 1; middleIndex - i >= 0; i++) {
// console.log(i);
if (word3[middleIndex - i] === word3[middleIndex + i]) {
continue;
} else {
return false;
}
}
return true;
} else {
return false;
}
}

console.log(isPalindrome("racecar"));
console.log(isPalindrome("hello"));
console.log(isPalindrome("Was it a car or a cat I saw"));
console.log(isPalindrome("taco cat"));