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Reordered exercises and improved formulations
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‎lib/utils/my_exercises.dart‎

Lines changed: 55 additions & 47 deletions
Original file line numberDiff line numberDiff line change
@@ -3,42 +3,65 @@ import 'package:code_juge/utils/exercise_datamodell.dart';
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class MyExercises {
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final List<ExerciseDatamodell> exercises = [
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// Difficulty Level 0
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ExerciseDatamodell(
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name: "Message Length Analyzer",
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description: "Basic string processing.",
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task: "A system receives the identifier string \"HelloWorld\". "
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"Determine how many characters this identifier contains and output the number.",
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solution: "10",
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difficultyLevel: 0,
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),
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// Difficulty Level 1
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ExerciseDatamodell(
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name: "Energy Pulse Calculation",
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description: "A basic mathematical operation involving exponentiation.",
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task: "In a physics simulation, a small energy pulse has an intensity value of 12 units. "
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task: "In a physics simulation, a small energy pulse has an intensity of 12 units. "
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"The total energy released is defined as the square of this intensity. "
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"Calculate the energy released and output the resulting value.",
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"Calculate and output the resulting energy value.",
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solution: "144",
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difficultyLevel: 1,
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hint: "You only need to multiply the number by itself.",
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),
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ExerciseDatamodell(
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name: "Character Encoding Lookup",
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description: "Understanding ASCII encoding.",
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task: "In a low-level communication protocol, the character 'A' is transmitted. "
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"Determine the ASCII value of 'A' and output it.",
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solution: "65",
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difficultyLevel: 1,
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),
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// Difficulty Level 2
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ExerciseDatamodell(
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name: "Accumulated Workload",
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description: "Summation of a numerical series.",
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task: "A researcher records daily workload values from day 1 to day 50. "
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"To estimate the total effort, calculate the sum of all integers from 1 to 50 and output the result.",
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"Calculate the sum of all integers from 1 to 50 and output the result.",
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solution: "1275",
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difficultyLevel: 2,
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hint: "A loop or a mathematical formula can help you sum consecutive numbers.",
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),
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ExerciseDatamodell(
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name: "Sensor Data Averaging",
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description: "Working with multiple fixed numeric values.",
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task: "A measurement device produced the following readings: 4, 18, 22, 9, and 17. "
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"To smooth out fluctuations, compute the average of these five values and output the result as a whole number.",
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task: "A measurement device produced the readings: 4, 18, 22, 9, and 17. "
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"Compute the average of these five values and output the result as a whole number.",
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solution: "14",
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difficultyLevel: 2,
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),
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ExerciseDatamodell(
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name: "Weather Station Conversion",
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description: "Applying a temperature conversion formula.",
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task: "A weather station reports a temperature of 68°F. "
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"Convert this value to Celsius using the standard formula and output the result as a whole number.",
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"Convert this value to Celsius using the standard formula and output the whole-number result.",
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solution: "20",
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difficultyLevel: 2,
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hint: "Use the formula: 1°C = (1°F - 32) × 5/9.",
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hint: "Use the formula: (°F - 32) × 5/9.",
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),
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// Difficulty Level 3
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ExerciseDatamodell(
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name: "Circular Field Area",
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description: "Applying geometric formulas.",
@@ -47,22 +70,6 @@ class MyExercises {
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solution: "154",
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difficultyLevel: 3,
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),
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ExerciseDatamodell(
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name: "Message Length Analyzer",
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description: "Basic string processing.",
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task: "A system receives the identifier string \"HelloWorld\". "
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"Determine how many characters this identifier contains and output the number.",
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solution: "10",
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difficultyLevel: 1,
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),
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ExerciseDatamodell(
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name: "Character Encoding Lookup",
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description: "Understanding ASCII encoding.",
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task: "In a low-level communication protocol, the character 'A' is transmitted. "
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"Determine the ASCII value of 'A' and output it.",
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solution: "65",
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difficultyLevel: 1,
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),
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ExerciseDatamodell(
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name: "Fibonacci Growth Model",
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description: "Working with a classical recursive sequence.",
@@ -72,6 +79,8 @@ class MyExercises {
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difficultyLevel: 3,
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hint: "Each number is the sum of the previous two.",
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),
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// Difficulty Level 4
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ExerciseDatamodell(
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name: "Prime Distribution Analysis",
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description: "Algorithmic reasoning with number theory.",
@@ -90,60 +99,59 @@ class MyExercises {
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difficultyLevel: 4,
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hint: "The main diagonal uses indices [0][0], [1][1], [2][2].",
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),
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ExerciseDatamodell(
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name: "Array Rotation Mechanism",
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description: "Array manipulation and index shifting.",
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task: "Rotate the array [1, 2, 3, 4, 5, 6] three positions to the right. "
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"Output the resulting array as a comma-separated string.",
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solution: "4,5,6,1,2,3",
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difficultyLevel: 4,
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hint: "Elements moved off the end reappear at the beginning.",
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),
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// Difficulty Level 5
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ExerciseDatamodell(
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name: "Encrypted Transmission Decoder",
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description: "A challenging task involving character shifting and basic cryptographic transformation.",
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description: "Decoding a Caesar cipher with character shifting.",
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task: "A satellite sends the encrypted message \"KHOORZRUOG\" using a Caesar cipher with a shift of +3. "
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"Write a program that decodes the message by reversing the shift and outputs the original plaintext.",
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"Decode the message by reversing the shift and output the original plaintext.",
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solution: "HELLOWORLD",
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difficultyLevel: 5,
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hint: "In a Caesar cipher with a shift of +3, each letter in the encrypted text was moved three positions forward in the alphabet. "
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"To decode it, shift each letter three positions backward (e.g., D → A, E → B). "
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"Remember that the alphabet wraps around.",
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hint: "Shift each letter three positions backward. The alphabet wraps around.",
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),
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ExerciseDatamodell(
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name: "Lexicographical Sort Engine",
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description: "Implementing a sorting algorithm without relying on built-in sort functions.",
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task: "A dataset contains the following words: [\"zebra\", \"apple\", \"moon\", \"delta\", \"car\"]. "
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description: "Implementing a sorting algorithm without built-in sort functions.",
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task: "A dataset contains the words: [\"zebra\", \"apple\", \"moon\", \"delta\", \"car\"]. "
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"Sort these words in ascending lexicographical order using your own sorting logic and output them "
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"as a single string separated by commas.",
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"as a single comma-separated string.",
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solution: "apple,car,delta,moon,zebra",
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difficultyLevel: 5,
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hint: "Compare strings character by character, similar to dictionary order.",
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),
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ExerciseDatamodell(
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name: "Maximum Frequency Analyzer",
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description: "A frequency-counting task requiring iteration and comparison logic.",
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description: "A frequency-counting task requiring iteration and comparison.",
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task: "Given the string \"MISSISSIPPI\", determine which character appears most frequently. "
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"If multiple characters have the same highest frequency, output the alphabetically first one. "
119-
"Output only the character.",
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"If multiple characters tie, output the alphabetically first one.",
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solution: "I",
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difficultyLevel: 5,
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),
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ExerciseDatamodell(
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name: "Binary Search Simulation",
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description: "Simulating a binary search manually on a fixed dataset.",
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description: "Simulating a binary search on a fixed dataset.",
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task: "You are given the sorted array [3, 8, 15, 23, 42, 56, 78, 91]. "
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"Simulate a binary search for the value 42 and output the index at which it is found. "
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"Simulate a binary search for the value 42 and output the index where it is found. "
128145
"Use zero-based indexing.",
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solution: "4",
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difficultyLevel: 5,
131148
hint: "Binary search repeatedly halves the search interval.",
132149
),
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ExerciseDatamodell(
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name: "Array Rotation Mechanism",
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description: "A task involving array manipulation and index shifting.",
136-
task: "Rotate the array [1, 2, 3, 4, 5, 6] three positions to the right. "
137-
"Output the resulting array as a comma-separated string.",
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solution: "4,5,6,1,2,3",
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difficultyLevel: 4,
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hint: "Elements moved off the end reappear at the beginning.",
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),
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ExerciseDatamodell(
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name: "Checksum Validator",
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description: "A more advanced algorithmic task involving weighted summation.",
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description: "A weighted summation task for validating numeric codes.",
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task: "A device generates the identification code \"57281\". "
146-
"To validate it, compute the checksum by multiplying each digit by its 1-based index "
154+
"Compute the checksum by multiplying each digit by its 1-based index "
147155
"(first digit × 1, second digit × 2, ...). "
148156
"Sum all products and output the checksum.",
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solution: "62",

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