-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathjava_easy.html
More file actions
390 lines (371 loc) · 10.8 KB
/
java_easy.html
File metadata and controls
390 lines (371 loc) · 10.8 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Java Easy Challenges</title>
<style>
body {
background-color: #1e1e1e;
color: #e0e0e0;
font-family: 'JetBrains Mono', monospace;
padding: 2rem;
}
.container {
max-width: 1500px;
margin: auto;
}
h1 {
margin-bottom: 1rem;
}
.problem-description {
background: #272727;
padding: 1.5rem;
border-radius: 8px;
margin-bottom: 2rem;
}
textarea {
width: 100%;
height: 200px;
background: #141414;
color: #00ffa6;
border: none;
border-radius: 6px;
font-family: 'JetBrains Mono', monospace;
font-size: 1rem;
padding: 1rem;
resize: vertical;
}
.console {
background: #141414;
color: #00ffa6;
padding: 1rem;
border-radius: 6px;
height: 200px;
overflow-y: auto;
white-space: pre-wrap;
margin-top: 1rem;
font-size: 0.9rem;
}
button {
margin-top: 1rem;
background-color: #00bcd4;
border: none;
color: white;
font-weight: bold;
padding: 0.75rem 1.5rem;
border-radius: 6px;
cursor: pointer;
transition: background-color 0.3s ease;
}
button:hover {
background-color: #0097a7;
}
</style>
</head>
<body>
<h1>Java Easy Challenges</h1>
<div id="problem"></div>
<textarea id="codeEditor"></textarea>
<div>
<button id="prevBtn" disabled>Previous</button>
<button id="runBtn">Run Code</button>
<button id="nextBtn">Next</button>
</div>
<div id="scoreDisplay" style="text-align: center; margin-top: 0.5rem; font-weight: bold;">
Score: 0 / 25
</div>
<script>
const firebaseConfig = {
apiKey: "AIzaSyBTqasiZ6zn3D2oFdtwQFR8YowBGyUTzoI",
authDomain: "code-quest-c5cc6.firebaseapp.com",
projectId: "code-quest-c5cc6",
storageBucket: "code-quest-c5cc6.firebasestorage.app",
messagingSenderId: "166511404658",
appId: "1:166511404658:web:1d78060d55a26eaff884eb"
};
const questions = [
{
problem: 'Write a Java program that prints "Hello, World!" to the console.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('System.out.println("Hello, World!")'),
},
{
problem: 'Declare an integer variable named "num" and assign it the value 10.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('int num = 10'),
},
{
problem: 'Add two integers, 5 and 7, and print the result.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('System.out.println(5 + 7)') || code.includes('System.out.println(12)'),
},
{
problem: 'Declare a double variable "price" with the value 19.99.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('double price = 19.99'),
},
{
problem: 'Write a program that prints the sum of 3 and 4.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('System.out.println(3 + 4)') || code.includes('System.out.println(7)'),
},
{
problem: 'Declare a String variable "name" and assign it your name.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.match(/String\s+name\s*=\s*".+"/),
},
{
problem: 'Print the value of the variable "num" which is 42.',
boilerplate: `public class Main {
public static void main(String[] args) {
int num = 42;
// Your code here
}
}`,
validate: code => code.includes('System.out.println(num)'),
},
{
problem: 'Declare a boolean variable "isJavaFun" and assign it true.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('boolean isJavaFun = true'),
},
{
problem: 'Write a program that prints the result of 10 divided by 2.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('System.out.println(10 / 2)') || code.includes('System.out.println(5)'),
},
{
problem: 'Declare a char variable "grade" and assign it the letter A.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes("char grade = 'A'"),
},
{
problem: 'Write a program that prints "Java is awesome!"',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('System.out.println("Java is awesome!")'),
},
{
problem: 'Declare an array of integers with values 1, 2, 3, 4, 5.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('int[]') && code.includes('{1, 2, 3, 4, 5}'),
},
{
problem: 'Write a program that prints the length of the string "Hello".',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes("System.out.println(\"Hello\".length())"),
},
{
problem: 'Declare a float variable "pi" and assign it 3.14f.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('float pi = 3.14f'),
},
{
problem: 'Write a program that prints the remainder of 10 divided by 3.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('System.out.println(10 % 3)') || code.includes('System.out.println(1)'),
},
{
problem: 'Declare a long variable "distance" with value 100000L.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('long distance = 100000L'),
},
{
problem: 'Write a program that prints "Goodbye!"',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('System.out.println("Goodbye!")'),
},
{
problem: 'Declare a short variable "age" with value 25.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('short age = 25'),
},
{
problem: 'Write a program that prints the result of 2 raised to the power 3 using Math.pow.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('Math.pow(2, 3)'),
},
{
problem: 'Declare a byte variable "b" with value 100.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('byte b = 100'),
},
{
problem: 'Write a program that prints "I love Java!"',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('System.out.println("I love Java!")'),
},
{
problem: 'Declare a String array with the values {"apple", "banana", "cherry"}.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('String[]') && code.includes('{"apple", "banana", "cherry"}'),
},
{
problem: 'Write a program that prints the uppercase version of "hello".',
boilerplate: `public class Main {
public static void main(String[] args) {
String text = "hello";
// Your code here
}
}`,
validate: code => code.includes('text.toUpperCase()'),
},
{
problem: 'Declare a final int named MAX with value 1000.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('final int MAX = 1000'),
},
{
problem: 'Write a program that prints the first character of the string "Java".',
boilerplate: `public class Main {
public static void main(String[] args) {
String str = "Java";
// Your code here
}
}`,
validate: code => code.includes('str.charAt(0)'),
},
{
problem: 'Declare a boolean variable "flag" and assign it false.',
boilerplate: `public class Main {
public static void main(String[] args) {
// Your code here
}
}`,
validate: code => code.includes('boolean flag = false'),
},
];
let currentIndex = 0;
let score = 0;
const problemEl = document.getElementById('problem');
const codeEditor = document.getElementById('codeEditor');
const prevBtn = document.getElementById('prevBtn');
const nextBtn = document.getElementById('nextBtn');
const runBtn = document.getElementById('runBtn');
const scoreEl = document.getElementById('scoreDisplay');
scoreEl.textContent = `Score: ${score} / ${questions.length}`;
function loadQuestion(index) {
const q = questions[index];
problemEl.innerHTML = `<h3>Question ${index + 1}:</h3><p>${q.problem}</p>`;
codeEditor.value = q.boilerplate;
prevBtn.disabled = index === 0;
nextBtn.disabled = index === questions.length - 1;
}
prevBtn.onclick = () => {
if (currentIndex > 0) {
currentIndex--;
loadQuestion(currentIndex);
}
};
nextBtn.onclick = () => {
if (currentIndex < questions.length - 1) {
currentIndex++;
loadQuestion(currentIndex);
}
};
runBtn.onclick = () => {
const userCode = codeEditor.value;
const valid = questions[currentIndex].validate(userCode);
if (valid) {
alert("Correct!");
if (!questions[currentIndex].scored) {
score++;
questions[currentIndex].scored = true;
scoreEl.textContent = `Score: ${score} / ${questions.length}`;
}
} else {
alert("Incorrect, try again.");
}
};
loadQuestion(currentIndex);
</script>
</body>
</html>