I use this repository to save and present my solutions for the challenges on the EntwicklerHeld coding challenge platform.
Click on the challenge names for more details and to see the solution.
List Last updated: 2025-01-17
▮▯▯▯ = Easy
▮▮▯▯ = Medium
▮▮▮▯ = Hard
▮▮▮▮ = Hardcore
| Language | Total | ▮▯▯▯ | ▮▮▯▯ | ▮▮▮▯ | ▮▮▮▮ |
|---|---|---|---|---|---|
| JavaScript | 29 | 16 | 11 | 1 | 1 |
| Java | 24 | 8 | 15 | 1 | 0 |
| Python | 19 | 10 | 8 | 1 | 0 |
| PHP | 9 | 7 | 2 | 0 | 0 |
| Cpp | 4 | 2 | 2 | 0 | 0 |
| CSharp | 4 | 4 | 0 | 0 | 0 |
| Kotlin | 3 | 3 | 0 | 0 | 0 |
| PowerShell | 1 | 0 | 1 | 0 | 0 |
| Totals | 93 | 50 | 39 | 3 | 1 |
| Challenge Name | Difficulty | Overall Success Rate @EH | Overall Solved/Accepted @EH | Date Solved | Language |
|---|---|---|---|---|---|
| Anagram | ▮▯▯▯ | ████████░░ 84% | 1073 / 1284 | 2022-04-24 | JavaScript |
| FizzBuzz | ▮▯▯▯ | ███████░░░ 69% | 3359 / 4840 | 2022-04-24 | JavaScript |
| Pascal's Triangle | ▮▯▯▯ | ████████░░ 80% | 826 / 1038 | 2022-04-27 | JavaScript |
| Scary JavaScript | ▮▯▯▯ | ██████░░░░ 60% | 666 / 1112 | 2022-04-27 | JavaScript |
| Bricks and Water | ▮▯▯▯ | ████░░░░░░ 44% | 737 / 1682 | 2022-05-01 | JavaScript |
| TV Channel | ▮▯▯▯ | ████░░░░░░ 42% | 773 / 1832 | 2022-05-01 | JavaScript |
| Personal Data Safety | ▮▯▯▯ | ███████░░░ 65% | 557 / 857 | 2022-05-02 | PHP |
| Easter Challenge 2022 | ▮▯▯▯ | ██████░░░░ 64% | 144 / 225 | 2022-06-02 | PHP |
| Climbing Stairs | ▮▯▯▯ | ███████░░░ 69% | 599 / 868 | 2022-06-06 | JavaScript |
| Advent Bakery | ▮▮▯▯ | ████░░░░░░ 40% | 117 / 290 | 2022-06-16 | JavaScript |
| Matching Clients | ▮▮▯▯ | ████░░░░░░ 43% | 187 / 433 | 2022-06-19 | JavaScript |
| Happy Subnetting | ▮▮▮▯ | ███░░░░░░░ 25% | 58 / 231 | 2022-09-19 | JavaScript |
| Cinema Seat Reservation | ▮▮▮▮ | █░░░░░░░░░ 12% | 59 / 478 | 2022-10-08 | JavaScript |
| Mails to Santa | ▮▯▯▯ | ████░░░░░░ 44% | 138 / 317 | 2022-10-11 | PHP |
| Perfect Place | ▮▮▯▯ | ████░░░░░░ 36% | 95 / 261 | 2022-12-18 | JavaScript |
| Build a Clock | ▮▯▯▯ | ███████░░░ 67% | 353 / 528 | 2023-05-07 | JavaScript |
| Matching brackets | ▮▯▯▯ | ███████░░░ 73% | 394 / 538 | 2023-05-24 | JavaScript |
| Reverse SMS | ▮▮▯▯ | ██░░░░░░░░ 19% | 29 / 149 | 2023-06-23 | JavaScript |
| Flatten Arrays | ▮▯▯▯ | ████████░░ 78% | 829 / 1058 | 2023-06-26 | Python |
| Scary Python | ▮▯▯▯ | ██████░░░░ 63% | 1198 / 1887 | 2023-06-27 | Python |
| Say Numbers | ▮▮▯▯ | ██████░░░░ 58% | 291 / 503 | 2023-06-30 | Java |
| GDV Extraction | ▮▮▯▯ | ████░░░░░░ 39% | 72 / 187 | 2023-07-02 | JavaScript |
| Pizza for my Friends Challenge | ▮▮▯▯ | ███░░░░░░░ 31% | 244 / 794 | 2023-07-04 | JavaScript |
| Non Repeating Characters | ▮▯▯▯ | ███████░░░ 72% | 1713 / 2367 | 2023-07-05 | Python |
| IoT Office Sensors | ▮▯▯▯ | ██████░░░░ 56% | 176 / 312 | 2023-07-07 | Java |
| Change Calculator | ▮▮▯▯ | ████░░░░░░ 37% | 133 / 362 | 2023-07-11 | Java |
| State Machine | ▮▮▯▯ | ███████░░░ 69% | 679 / 980 | 2023-07-11 | Java |
| Storing vehicle data | ▮▮▯▯ | █████░░░░░ 46% | 230 / 502 | 2023-07-14 | Java |
| Maps and Polygons | ▮▮▮▯ | ███░░░░░░░ 30% | 59 / 195 | 2023-07-20 | Java |
| Binary Tree | ▮▮▯▯ | ███████░░░ 65% | 607 / 935 | 2023-07-28 | JavaScript |
| Rest API | ▮▮▯▯ | ████░░░░░░ 39% | 116 / 295 | 2023-08-04 | Java |
| Fizz Buzz without 'if' | ▮▯▯▯ | ████████░░ 80% | 912 / 1133 | 2023-08-07 | Python |
| Keyword Extractor | ▮▮▯▯ | █████░░░░░ 45% | 122 / 271 | 2023-08-16 | Python |
| Document Scan | ▮▮▯▯ | ███░░░░░░░ 31% | 73 / 239 | 2023-09-03 | Java |
| Bowling | ▮▯▯▯ | █████░░░░░ 54% | 133 / 245 | 2023-09-15 | JavaScript |
| Tracking Cyber Threats: The IP Location Task | ▮▮▯▯ | █████░░░░░ 47% | 90 / 193 | 2023-10-09 | PowerShell |
| Run Length Encoding | ▮▯▯▯ | █████████░ 87% | 374 / 428 | 2023-10-19 | JavaScript |
| Number conversion | ▮▯▯▯ | ████████░░ 75% | 383 / 512 | 2024-02-11 | Cpp |
| Binary Search | ▮▯▯▯ | ██████░░░░ 58% | 147 / 252 | 2024-02-29 | JavaScript |
| Grains | ▮▯▯▯ | █████████░ 86% | 543 / 629 | 2024-03-06 | Java |
| Robot Simulator | ▮▯▯▯ | ████████░░ 78% | 411 / 525 | 2024-03-09 | Cpp |
| Word Counter | ▮▮▯▯ | ████░░░░░░ 38% | 519 / 1372 | 2024-03-09 | Cpp |
| ISBN Verifier | ▮▯▯▯ | ████████░░ 75% | 167 / 224 | 2024-03-11 | Kotlin |
| Longest Substring | ▮▯▯▯ | █████░░░░░ 54% | 131 / 241 | 2024-03-12 | JavaScript |
| Client number validation | ▮▯▯▯ | ████████░░ 75% | 159 / 213 | 2024-03-13 | JavaScript |
| Hacking a Slot Machine | ▮▮▯▯ | ███░░░░░░░ 34% | 333 / 992 | 2024-03-17 | Python |
| Airport Runway Direction | ▮▮▯▯ | ███░░░░░░░ 33% | 545 / 1658 | 2024-03-17 | Python |
| EntwicklerHeld Celebration | ▮▯▯▯ | ███████░░░ 70% | 1239 / 1772 | 2024-03-18 | Python |
| Filling Area | ▮▮▯▯ | █████░░░░░ 50% | 557 / 1119 | 2024-03-26 | Python |
| Fibonacci Numbers | ▮▯▯▯ | ████████░░ 78% | 885 / 1136 | 2024-03-26 | Python |
| Selfies in Copenhagen | ▮▮▯▯ | ████░░░░░░ 42% | 149 / 355 | 2024-03-27 | Python |
| Ancient Encryption | ▮▮▯▯ | ███████░░░ 74% | 412 / 557 | 2024-03-28 | Python |
| Prime Test | ▮▯▯▯ | █████████░ 94% | 611 / 650 | 2024-04-03 | Java |
| Circuit Breaker | ▮▮▯▯ | ████░░░░░░ 43% | 73 / 171 | 2024-04-05 | JavaScript |
| Filling Area (Hard Mode) | ▮▮▮▯ | ██████░░░░ 60% | 367 / 607 | 2024-04-07 | Python |
| Meter readings | ▮▯▯▯ | █████░░░░░ 45% | 308 / 689 | 2024-04-09 | PHP |
| Sportly Webapp - Getting Started | ▮▯▯▯ | ███░░░░░░░ 31% | 172 / 551 | 2024-04-13 | PHP |
| Easy Storage | ▮▯▯▯ | ██████░░░░ 63% | 1258 / 1985 | 2024-04-15 | Java |
| Candidates | ▮▮▯▯ | ████░░░░░░ 36% | 40 / 111 | 2024-04-15 | JavaScript |
| Santa's Cookie-Finder Magic | ▮▮▯▯ | ████░░░░░░ 38% | 61 / 161 | 2024-04-18 | Cpp |
| Message Distribution Network | ▮▮▯▯ | ███████░░░ 68% | 232 / 340 | 2024-04-19 | Java |
| Vendor's Box | ▮▮▯▯ | ██████░░░░ 63% | 332 / 530 | 2024-04-21 | Java |
| Windshield Wiper Check | ▮▮▯▯ | ███░░░░░░░ 25% | 50 / 203 | 2024-04-24 | Python |
| Insurance Matching | ▮▮▯▯ | ████░░░░░░ 41% | 262 / 642 | 2024-04-27 | Java |
| Emoji Bot | ▮▯▯▯ | ████░░░░░░ 39% | 469 / 1200 | 2024-04-27 | Java |
| GPS Navigation | ▮▮▯▯ | ███░░░░░░░ 33% | 110 / 335 | 2024-04-28 | Python |
| Weigh the Slow Loris | ▮▯▯▯ | ██████░░░░ 62% | 1408 / 2270 | 2024-04-29 | Java |
| Page Wrapping | ▮▯▯▯ | ██░░░░░░░░ 21% | 30 / 146 | 2024-04-30 | JavaScript |
| Markdown Parser Refactoring | ▮▯▯▯ | ████░░░░░░ 36% | 87 / 241 | 2024-05-09 | PHP |
| Sportly Webapp - Add the Leaderboard | ▮▮▯▯ | ████░░░░░░ 41% | 93 / 226 | 2024-05-15 | PHP |
| Armstrong Numbers | ▮▯▯▯ | ████████░░ 76% | 65 / 86 | 2024-05-17 | Kotlin |
| Armstrong Numbers | ▮▯▯▯ | ████████░░ 81% | 125 / 154 | 2024-05-17 | Java |
| Armstrong Numbers | ▮▯▯▯ | █████████░ 89% | 188 / 212 | 2024-05-17 | Python |
| Armstrong Numbers | ▮▯▯▯ | ████████░░ 83% | 118 / 142 | 2024-05-17 | CSharp |
| Luhn Checksum | ▮▯▯▯ | ████████░░ 78% | 324 / 417 | 2024-05-17 | CSharp |
| Tickets for the City Tower | ▮▮▯▯ | ███░░░░░░░ 30% | 78 / 259 | 2024-05-19 | PHP |
| Allergies | ▮▯▯▯ | ██████░░░░ 63% | 180 / 288 | 2024-05-19 | CSharp |
| Christmas Tree of Hanoi | ▮▯▯▯ | ██████░░░░ 63% | 185 / 293 | 2024-05-22 | JavaScript |
| New Spaceship validation when entering the motherships | ▮▮▯▯ | ███░░░░░░░ 33% | 348 / 1054 | 2024-05-22 | Java |
| Handle the shopping cart | ▮▮▯▯ | ███░░░░░░░ 32% | 127 / 392 | 2024-06-05 | Java |
| Doubly Linked List | ▮▯▯▯ | ██████░░░░ 60% | 109 / 182 | 2024-06-06 | Java |
| CamelCase to snake_case | ▮▯▯▯ | █████░░░░░ 53% | 163 / 309 | 2024-06-06 | Kotlin |
| Resistor Color Trio | ▮▯▯▯ | ███████░░░ 74% | 207 / 279 | 2024-06-07 | Python |
| Knapsack | ▮▮▯▯ | ██░░░░░░░░ 23% | 30 / 129 | 2024-06-08 | Java |
| Life Insurance | ▮▮▯▯ | ██████░░░░ 58% | 577 / 989 | 2024-06-09 | Java |
| Make the world a better place | ▮▮▯▯ | ███░░░░░░░ 28% | 277 / 993 | 2024-06-12 | Java |
| ChatGPT WhatsApp Bot | ▮▯▯▯ | ████░░░░░░ 37% | 84 / 224 | 2024-06-13 | Python |
| Lottery Sim | ▮▮▯▯ | ████████░░ 77% | 72 / 94 | 2024-06-14 | JavaScript |
| Patricia-Trie | ▮▮▯▯ | █████░░░░░ 51% | 37 / 72 | 2024-06-15 | JavaScript |
| String Calculation | ▮▯▯▯ | █████░░░░░ 51% | 261 / 513 | 2024-06-25 | CSharp |
| Analyse the Plant | ▮▮▯▯ | ███░░░░░░░ 34% | 127 / 373 | 2024-07-05 | Java |
| A small dumb Chatbot | ▮▯▯▯ | █████░░░░░ 46% | 314 / 684 | 2024-07-09 | PHP |
| High Scores | ▮▯▯▯ | █████████░ 89% | 141 / 159 | 2024-12-08 | Python |
| Challenge Name | Difficulty | Overall Success Rate @EH | Overall Solved/Accepted @EH | Date Solved | Language |
|---|---|---|---|---|---|
| Cinema Seat Reservation | ▮▮▮▮ | █░░░░░░░░░ 12% | 59 / 478 | 2022-10-08 | JavaScript |
| Filling Area (Hard Mode) | ▮▮▮▯ | ██████░░░░ 60% | 367 / 607 | 2024-04-07 | Python |
| Maps and Polygons | ▮▮▮▯ | ███░░░░░░░ 30% | 59 / 195 | 2023-07-20 | Java |
| Happy Subnetting | ▮▮▮▯ | ███░░░░░░░ 25% | 58 / 231 | 2022-09-19 | JavaScript |
| Analyse the Plant | ▮▮▯▯ | ███░░░░░░░ 34% | 127 / 373 | 2024-07-05 | Java |
| Patricia-Trie | ▮▮▯▯ | █████░░░░░ 51% | 37 / 72 | 2024-06-15 | JavaScript |
| Lottery Sim | ▮▮▯▯ | ████████░░ 77% | 72 / 94 | 2024-06-14 | JavaScript |
| Make the world a better place | ▮▮▯▯ | ███░░░░░░░ 28% | 277 / 993 | 2024-06-12 | Java |
| Life Insurance | ▮▮▯▯ | ██████░░░░ 58% | 577 / 989 | 2024-06-09 | Java |
| Knapsack | ▮▮▯▯ | ██░░░░░░░░ 23% | 30 / 129 | 2024-06-08 | Java |
| Handle the shopping cart | ▮▮▯▯ | ███░░░░░░░ 32% | 127 / 392 | 2024-06-05 | Java |
| New Spaceship validation when entering the motherships | ▮▮▯▯ | ███░░░░░░░ 33% | 348 / 1054 | 2024-05-22 | Java |
| Tickets for the City Tower | ▮▮▯▯ | ███░░░░░░░ 30% | 78 / 259 | 2024-05-19 | PHP |
| Sportly Webapp - Add the Leaderboard | ▮▮▯▯ | ████░░░░░░ 41% | 93 / 226 | 2024-05-15 | PHP |
| GPS Navigation | ▮▮▯▯ | ███░░░░░░░ 33% | 110 / 335 | 2024-04-28 | Python |
| Insurance Matching | ▮▮▯▯ | ████░░░░░░ 41% | 262 / 642 | 2024-04-27 | Java |
| Windshield Wiper Check | ▮▮▯▯ | ███░░░░░░░ 25% | 50 / 203 | 2024-04-24 | Python |
| Vendor's Box | ▮▮▯▯ | ██████░░░░ 63% | 332 / 530 | 2024-04-21 | Java |
| Message Distribution Network | ▮▮▯▯ | ███████░░░ 68% | 232 / 340 | 2024-04-19 | Java |
| Santa's Cookie-Finder Magic | ▮▮▯▯ | ████░░░░░░ 38% | 61 / 161 | 2024-04-18 | Cpp |
| Candidates | ▮▮▯▯ | ████░░░░░░ 36% | 40 / 111 | 2024-04-15 | JavaScript |
| Circuit Breaker | ▮▮▯▯ | ████░░░░░░ 43% | 73 / 171 | 2024-04-05 | JavaScript |
| Ancient Encryption | ▮▮▯▯ | ███████░░░ 74% | 412 / 557 | 2024-03-28 | Python |
| Selfies in Copenhagen | ▮▮▯▯ | ████░░░░░░ 42% | 149 / 355 | 2024-03-27 | Python |
| Filling Area | ▮▮▯▯ | █████░░░░░ 50% | 557 / 1119 | 2024-03-26 | Python |
| Hacking a Slot Machine | ▮▮▯▯ | ███░░░░░░░ 34% | 333 / 992 | 2024-03-17 | Python |
| Airport Runway Direction | ▮▮▯▯ | ███░░░░░░░ 33% | 545 / 1658 | 2024-03-17 | Python |
| Word Counter | ▮▮▯▯ | ████░░░░░░ 38% | 519 / 1372 | 2024-03-09 | Cpp |
| Tracking Cyber Threats: The IP Location Task | ▮▮▯▯ | █████░░░░░ 47% | 90 / 193 | 2023-10-09 | PowerShell |
| Document Scan | ▮▮▯▯ | ███░░░░░░░ 31% | 73 / 239 | 2023-09-03 | Java |
| Keyword Extractor | ▮▮▯▯ | █████░░░░░ 45% | 122 / 271 | 2023-08-16 | Python |
| Rest API | ▮▮▯▯ | ████░░░░░░ 39% | 116 / 295 | 2023-08-04 | Java |
| Binary Tree | ▮▮▯▯ | ███████░░░ 65% | 607 / 935 | 2023-07-28 | JavaScript |
| Storing vehicle data | ▮▮▯▯ | █████░░░░░ 46% | 230 / 502 | 2023-07-14 | Java |
| Change Calculator | ▮▮▯▯ | ████░░░░░░ 37% | 133 / 362 | 2023-07-11 | Java |
| State Machine | ▮▮▯▯ | ███████░░░ 69% | 679 / 980 | 2023-07-11 | Java |
| Pizza for my Friends Challenge | ▮▮▯▯ | ███░░░░░░░ 31% | 244 / 794 | 2023-07-04 | JavaScript |
| GDV Extraction | ▮▮▯▯ | ████░░░░░░ 39% | 72 / 187 | 2023-07-02 | JavaScript |
| Say Numbers | ▮▮▯▯ | ██████░░░░ 58% | 291 / 503 | 2023-06-30 | Java |
| Reverse SMS | ▮▮▯▯ | ██░░░░░░░░ 19% | 29 / 149 | 2023-06-23 | JavaScript |
| Perfect Place | ▮▮▯▯ | ████░░░░░░ 36% | 95 / 261 | 2022-12-18 | JavaScript |
| Matching Clients | ▮▮▯▯ | ████░░░░░░ 43% | 187 / 433 | 2022-06-19 | JavaScript |
| Advent Bakery | ▮▮▯▯ | ████░░░░░░ 40% | 117 / 290 | 2022-06-16 | JavaScript |
| High Scores | ▮▯▯▯ | █████████░ 89% | 141 / 159 | 2024-12-08 | Python |
| A small dumb Chatbot | ▮▯▯▯ | █████░░░░░ 46% | 314 / 684 | 2024-07-09 | PHP |
| String Calculation | ▮▯▯▯ | █████░░░░░ 51% | 261 / 513 | 2024-06-25 | CSharp |
| ChatGPT WhatsApp Bot | ▮▯▯▯ | ████░░░░░░ 37% | 84 / 224 | 2024-06-13 | Python |
| Resistor Color Trio | ▮▯▯▯ | ███████░░░ 74% | 207 / 279 | 2024-06-07 | Python |
| Doubly Linked List | ▮▯▯▯ | ██████░░░░ 60% | 109 / 182 | 2024-06-06 | Java |
| CamelCase to snake_case | ▮▯▯▯ | █████░░░░░ 53% | 163 / 309 | 2024-06-06 | Kotlin |
| Christmas Tree of Hanoi | ▮▯▯▯ | ██████░░░░ 63% | 185 / 293 | 2024-05-22 | JavaScript |
| Allergies | ▮▯▯▯ | ██████░░░░ 63% | 180 / 288 | 2024-05-19 | CSharp |
| Armstrong Numbers | ▮▯▯▯ | ████████░░ 76% | 65 / 86 | 2024-05-17 | Kotlin |
| Armstrong Numbers | ▮▯▯▯ | ████████░░ 81% | 125 / 154 | 2024-05-17 | Java |
| Armstrong Numbers | ▮▯▯▯ | █████████░ 89% | 188 / 212 | 2024-05-17 | Python |
| Armstrong Numbers | ▮▯▯▯ | ████████░░ 83% | 118 / 142 | 2024-05-17 | CSharp |
| Luhn Checksum | ▮▯▯▯ | ████████░░ 78% | 324 / 417 | 2024-05-17 | CSharp |
| Markdown Parser Refactoring | ▮▯▯▯ | ████░░░░░░ 36% | 87 / 241 | 2024-05-09 | PHP |
| Page Wrapping | ▮▯▯▯ | ██░░░░░░░░ 21% | 30 / 146 | 2024-04-30 | JavaScript |
| Weigh the Slow Loris | ▮▯▯▯ | ██████░░░░ 62% | 1408 / 2270 | 2024-04-29 | Java |
| Emoji Bot | ▮▯▯▯ | ████░░░░░░ 39% | 469 / 1200 | 2024-04-27 | Java |
| Easy Storage | ▮▯▯▯ | ██████░░░░ 63% | 1258 / 1985 | 2024-04-15 | Java |
| Sportly Webapp - Getting Started | ▮▯▯▯ | ███░░░░░░░ 31% | 172 / 551 | 2024-04-13 | PHP |
| Meter readings | ▮▯▯▯ | █████░░░░░ 45% | 308 / 689 | 2024-04-09 | PHP |
| Prime Test | ▮▯▯▯ | █████████░ 94% | 611 / 650 | 2024-04-03 | Java |
| Fibonacci Numbers | ▮▯▯▯ | ████████░░ 78% | 885 / 1136 | 2024-03-26 | Python |
| EntwicklerHeld Celebration | ▮▯▯▯ | ███████░░░ 70% | 1239 / 1772 | 2024-03-18 | Python |
| Client number validation | ▮▯▯▯ | ████████░░ 75% | 159 / 213 | 2024-03-13 | JavaScript |
| Longest Substring | ▮▯▯▯ | █████░░░░░ 54% | 131 / 241 | 2024-03-12 | JavaScript |
| ISBN Verifier | ▮▯▯▯ | ████████░░ 75% | 167 / 224 | 2024-03-11 | Kotlin |
| Robot Simulator | ▮▯▯▯ | ████████░░ 78% | 411 / 525 | 2024-03-09 | Cpp |
| Grains | ▮▯▯▯ | █████████░ 86% | 543 / 629 | 2024-03-06 | Java |
| Binary Search | ▮▯▯▯ | ██████░░░░ 58% | 147 / 252 | 2024-02-29 | JavaScript |
| Number conversion | ▮▯▯▯ | ████████░░ 75% | 383 / 512 | 2024-02-11 | Cpp |
| Run Length Encoding | ▮▯▯▯ | █████████░ 87% | 374 / 428 | 2023-10-19 | JavaScript |
| Bowling | ▮▯▯▯ | █████░░░░░ 54% | 133 / 245 | 2023-09-15 | JavaScript |
| Fizz Buzz without 'if' | ▮▯▯▯ | ████████░░ 80% | 912 / 1133 | 2023-08-07 | Python |
| IoT Office Sensors | ▮▯▯▯ | ██████░░░░ 56% | 176 / 312 | 2023-07-07 | Java |
| Non Repeating Characters | ▮▯▯▯ | ███████░░░ 72% | 1713 / 2367 | 2023-07-05 | Python |
| Scary Python | ▮▯▯▯ | ██████░░░░ 63% | 1198 / 1887 | 2023-06-27 | Python |
| Flatten Arrays | ▮▯▯▯ | ████████░░ 78% | 829 / 1058 | 2023-06-26 | Python |
| Matching brackets | ▮▯▯▯ | ███████░░░ 73% | 394 / 538 | 2023-05-24 | JavaScript |
| Build a Clock | ▮▯▯▯ | ███████░░░ 67% | 353 / 528 | 2023-05-07 | JavaScript |
| Mails to Santa | ▮▯▯▯ | ████░░░░░░ 44% | 138 / 317 | 2022-10-11 | PHP |
| Climbing Stairs | ▮▯▯▯ | ███████░░░ 69% | 599 / 868 | 2022-06-06 | JavaScript |
| Easter Challenge 2022 | ▮▯▯▯ | ██████░░░░ 64% | 144 / 225 | 2022-06-02 | PHP |
| Personal Data Safety | ▮▯▯▯ | ███████░░░ 65% | 557 / 857 | 2022-05-02 | PHP |
| Bricks and Water | ▮▯▯▯ | ████░░░░░░ 44% | 737 / 1682 | 2022-05-01 | JavaScript |
| TV Channel | ▮▯▯▯ | ████░░░░░░ 42% | 773 / 1832 | 2022-05-01 | JavaScript |
| Pascal's Triangle | ▮▯▯▯ | ████████░░ 80% | 826 / 1038 | 2022-04-27 | JavaScript |
| Scary JavaScript | ▮▯▯▯ | ██████░░░░ 60% | 666 / 1112 | 2022-04-27 | JavaScript |
| Anagram | ▮▯▯▯ | ████████░░ 84% | 1073 / 1284 | 2022-04-24 | JavaScript |
| FizzBuzz | ▮▯▯▯ | ███████░░░ 69% | 3359 / 4840 | 2022-04-24 | JavaScript |
| Challenge Name | Difficulty | Overall Success Rate @EH | Overall Solved/Accepted @EH | Date Solved | Language |
|---|---|---|---|---|---|
| Cinema Seat Reservation | ▮▮▮▮ | █░░░░░░░░░ 12% | 59 / 478 | 2022-10-08 | JavaScript |
| Reverse SMS | ▮▮▯▯ | ██░░░░░░░░ 19% | 29 / 149 | 2023-06-23 | JavaScript |
| Page Wrapping | ▮▯▯▯ | ██░░░░░░░░ 21% | 30 / 146 | 2024-04-30 | JavaScript |
| Knapsack | ▮▮▯▯ | ██░░░░░░░░ 23% | 30 / 129 | 2024-06-08 | Java |
| Windshield Wiper Check | ▮▮▯▯ | ███░░░░░░░ 25% | 50 / 203 | 2024-04-24 | Python |
| Happy Subnetting | ▮▮▮▯ | ███░░░░░░░ 25% | 58 / 231 | 2022-09-19 | JavaScript |
| Make the world a better place | ▮▮▯▯ | ███░░░░░░░ 28% | 277 / 993 | 2024-06-12 | Java |
| Tickets for the City Tower | ▮▮▯▯ | ███░░░░░░░ 30% | 78 / 259 | 2024-05-19 | PHP |
| Maps and Polygons | ▮▮▮▯ | ███░░░░░░░ 30% | 59 / 195 | 2023-07-20 | Java |
| Sportly Webapp - Getting Started | ▮▯▯▯ | ███░░░░░░░ 31% | 172 / 551 | 2024-04-13 | PHP |
| Document Scan | ▮▮▯▯ | ███░░░░░░░ 31% | 73 / 239 | 2023-09-03 | Java |
| Pizza for my Friends Challenge | ▮▮▯▯ | ███░░░░░░░ 31% | 244 / 794 | 2023-07-04 | JavaScript |
| Handle the shopping cart | ▮▮▯▯ | ███░░░░░░░ 32% | 127 / 392 | 2024-06-05 | Java |
| New Spaceship validation when entering the motherships | ▮▮▯▯ | ███░░░░░░░ 33% | 348 / 1054 | 2024-05-22 | Java |
| GPS Navigation | ▮▮▯▯ | ███░░░░░░░ 33% | 110 / 335 | 2024-04-28 | Python |
| Airport Runway Direction | ▮▮▯▯ | ███░░░░░░░ 33% | 545 / 1658 | 2024-03-17 | Python |
| Analyse the Plant | ▮▮▯▯ | ███░░░░░░░ 34% | 127 / 373 | 2024-07-05 | Java |
| Hacking a Slot Machine | ▮▮▯▯ | ███░░░░░░░ 34% | 333 / 992 | 2024-03-17 | Python |
| Markdown Parser Refactoring | ▮▯▯▯ | ████░░░░░░ 36% | 87 / 241 | 2024-05-09 | PHP |
| Candidates | ▮▮▯▯ | ████░░░░░░ 36% | 40 / 111 | 2024-04-15 | JavaScript |
| Perfect Place | ▮▮▯▯ | ████░░░░░░ 36% | 95 / 261 | 2022-12-18 | JavaScript |
| ChatGPT WhatsApp Bot | ▮▯▯▯ | ████░░░░░░ 37% | 84 / 224 | 2024-06-13 | Python |
| Change Calculator | ▮▮▯▯ | ████░░░░░░ 37% | 133 / 362 | 2023-07-11 | Java |
| Santa's Cookie-Finder Magic | ▮▮▯▯ | ████░░░░░░ 38% | 61 / 161 | 2024-04-18 | Cpp |
| Word Counter | ▮▮▯▯ | ████░░░░░░ 38% | 519 / 1372 | 2024-03-09 | Cpp |
| Emoji Bot | ▮▯▯▯ | ████░░░░░░ 39% | 469 / 1200 | 2024-04-27 | Java |
| Rest API | ▮▮▯▯ | ████░░░░░░ 39% | 116 / 295 | 2023-08-04 | Java |
| GDV Extraction | ▮▮▯▯ | ████░░░░░░ 39% | 72 / 187 | 2023-07-02 | JavaScript |
| Advent Bakery | ▮▮▯▯ | ████░░░░░░ 40% | 117 / 290 | 2022-06-16 | JavaScript |
| Sportly Webapp - Add the Leaderboard | ▮▮▯▯ | ████░░░░░░ 41% | 93 / 226 | 2024-05-15 | PHP |
| Insurance Matching | ▮▮▯▯ | ████░░░░░░ 41% | 262 / 642 | 2024-04-27 | Java |
| Selfies in Copenhagen | ▮▮▯▯ | ████░░░░░░ 42% | 149 / 355 | 2024-03-27 | Python |
| TV Channel | ▮▯▯▯ | ████░░░░░░ 42% | 773 / 1832 | 2022-05-01 | JavaScript |
| Circuit Breaker | ▮▮▯▯ | ████░░░░░░ 43% | 73 / 171 | 2024-04-05 | JavaScript |
| Matching Clients | ▮▮▯▯ | ████░░░░░░ 43% | 187 / 433 | 2022-06-19 | JavaScript |
| Mails to Santa | ▮▯▯▯ | ████░░░░░░ 44% | 138 / 317 | 2022-10-11 | PHP |
| Bricks and Water | ▮▯▯▯ | ████░░░░░░ 44% | 737 / 1682 | 2022-05-01 | JavaScript |
| Meter readings | ▮▯▯▯ | █████░░░░░ 45% | 308 / 689 | 2024-04-09 | PHP |
| Keyword Extractor | ▮▮▯▯ | █████░░░░░ 45% | 122 / 271 | 2023-08-16 | Python |
| A small dumb Chatbot | ▮▯▯▯ | █████░░░░░ 46% | 314 / 684 | 2024-07-09 | PHP |
| Storing vehicle data | ▮▮▯▯ | █████░░░░░ 46% | 230 / 502 | 2023-07-14 | Java |
| Tracking Cyber Threats: The IP Location Task | ▮▮▯▯ | █████░░░░░ 47% | 90 / 193 | 2023-10-09 | PowerShell |
| Filling Area | ▮▮▯▯ | █████░░░░░ 50% | 557 / 1119 | 2024-03-26 | Python |
| String Calculation | ▮▯▯▯ | █████░░░░░ 51% | 261 / 513 | 2024-06-25 | CSharp |
| Patricia-Trie | ▮▮▯▯ | █████░░░░░ 51% | 37 / 72 | 2024-06-15 | JavaScript |
| CamelCase to snake_case | ▮▯▯▯ | █████░░░░░ 53% | 163 / 309 | 2024-06-06 | Kotlin |
| Longest Substring | ▮▯▯▯ | █████░░░░░ 54% | 131 / 241 | 2024-03-12 | JavaScript |
| Bowling | ▮▯▯▯ | █████░░░░░ 54% | 133 / 245 | 2023-09-15 | JavaScript |
| IoT Office Sensors | ▮▯▯▯ | ██████░░░░ 56% | 176 / 312 | 2023-07-07 | Java |
| Life Insurance | ▮▮▯▯ | ██████░░░░ 58% | 577 / 989 | 2024-06-09 | Java |
| Binary Search | ▮▯▯▯ | ██████░░░░ 58% | 147 / 252 | 2024-02-29 | JavaScript |
| Say Numbers | ▮▮▯▯ | ██████░░░░ 58% | 291 / 503 | 2023-06-30 | Java |
| Doubly Linked List | ▮▯▯▯ | ██████░░░░ 60% | 109 / 182 | 2024-06-06 | Java |
| Filling Area (Hard Mode) | ▮▮▮▯ | ██████░░░░ 60% | 367 / 607 | 2024-04-07 | Python |
| Scary JavaScript | ▮▯▯▯ | ██████░░░░ 60% | 666 / 1112 | 2022-04-27 | JavaScript |
| Weigh the Slow Loris | ▮▯▯▯ | ██████░░░░ 62% | 1408 / 2270 | 2024-04-29 | Java |
| Christmas Tree of Hanoi | ▮▯▯▯ | ██████░░░░ 63% | 185 / 293 | 2024-05-22 | JavaScript |
| Allergies | ▮▯▯▯ | ██████░░░░ 63% | 180 / 288 | 2024-05-19 | CSharp |
| Vendor's Box | ▮▮▯▯ | ██████░░░░ 63% | 332 / 530 | 2024-04-21 | Java |
| Easy Storage | ▮▯▯▯ | ██████░░░░ 63% | 1258 / 1985 | 2024-04-15 | Java |
| Scary Python | ▮▯▯▯ | ██████░░░░ 63% | 1198 / 1887 | 2023-06-27 | Python |
| Easter Challenge 2022 | ▮▯▯▯ | ██████░░░░ 64% | 144 / 225 | 2022-06-02 | PHP |
| Binary Tree | ▮▮▯▯ | ███████░░░ 65% | 607 / 935 | 2023-07-28 | JavaScript |
| Personal Data Safety | ▮▯▯▯ | ███████░░░ 65% | 557 / 857 | 2022-05-02 | PHP |
| Build a Clock | ▮▯▯▯ | ███████░░░ 67% | 353 / 528 | 2023-05-07 | JavaScript |
| Message Distribution Network | ▮▮▯▯ | ███████░░░ 68% | 232 / 340 | 2024-04-19 | Java |
| State Machine | ▮▮▯▯ | ███████░░░ 69% | 679 / 980 | 2023-07-11 | Java |
| Climbing Stairs | ▮▯▯▯ | ███████░░░ 69% | 599 / 868 | 2022-06-06 | JavaScript |
| FizzBuzz | ▮▯▯▯ | ███████░░░ 69% | 3359 / 4840 | 2022-04-24 | JavaScript |
| EntwicklerHeld Celebration | ▮▯▯▯ | ███████░░░ 70% | 1239 / 1772 | 2024-03-18 | Python |
| Non Repeating Characters | ▮▯▯▯ | ███████░░░ 72% | 1713 / 2367 | 2023-07-05 | Python |
| Matching brackets | ▮▯▯▯ | ███████░░░ 73% | 394 / 538 | 2023-05-24 | JavaScript |
| Resistor Color Trio | ▮▯▯▯ | ███████░░░ 74% | 207 / 279 | 2024-06-07 | Python |
| Ancient Encryption | ▮▮▯▯ | ███████░░░ 74% | 412 / 557 | 2024-03-28 | Python |
| Client number validation | ▮▯▯▯ | ████████░░ 75% | 159 / 213 | 2024-03-13 | JavaScript |
| ISBN Verifier | ▮▯▯▯ | ████████░░ 75% | 167 / 224 | 2024-03-11 | Kotlin |
| Number conversion | ▮▯▯▯ | ████████░░ 75% | 383 / 512 | 2024-02-11 | Cpp |
| Armstrong Numbers | ▮▯▯▯ | ████████░░ 76% | 65 / 86 | 2024-05-17 | Kotlin |
| Lottery Sim | ▮▮▯▯ | ████████░░ 77% | 72 / 94 | 2024-06-14 | JavaScript |
| Luhn Checksum | ▮▯▯▯ | ████████░░ 78% | 324 / 417 | 2024-05-17 | CSharp |
| Fibonacci Numbers | ▮▯▯▯ | ████████░░ 78% | 885 / 1136 | 2024-03-26 | Python |
| Robot Simulator | ▮▯▯▯ | ████████░░ 78% | 411 / 525 | 2024-03-09 | Cpp |
| Flatten Arrays | ▮▯▯▯ | ████████░░ 78% | 829 / 1058 | 2023-06-26 | Python |
| Fizz Buzz without 'if' | ▮▯▯▯ | ████████░░ 80% | 912 / 1133 | 2023-08-07 | Python |
| Pascal's Triangle | ▮▯▯▯ | ████████░░ 80% | 826 / 1038 | 2022-04-27 | JavaScript |
| Armstrong Numbers | ▮▯▯▯ | ████████░░ 81% | 125 / 154 | 2024-05-17 | Java |
| Armstrong Numbers | ▮▯▯▯ | ████████░░ 83% | 118 / 142 | 2024-05-17 | CSharp |
| Anagram | ▮▯▯▯ | ████████░░ 84% | 1073 / 1284 | 2022-04-24 | JavaScript |
| Grains | ▮▯▯▯ | █████████░ 86% | 543 / 629 | 2024-03-06 | Java |
| Run Length Encoding | ▮▯▯▯ | █████████░ 87% | 374 / 428 | 2023-10-19 | JavaScript |
| High Scores | ▮▯▯▯ | █████████░ 89% | 141 / 159 | 2024-12-08 | Python |
| Armstrong Numbers | ▮▯▯▯ | █████████░ 89% | 188 / 212 | 2024-05-17 | Python |
| Prime Test | ▮▯▯▯ | █████████░ 94% | 611 / 650 | 2024-04-03 | Java |