{
  "slug": "scala",
  "language": "Scala",
  "repository": "https://github.com/exercism/xscala",
  "active": true,
  "exercises": [
    {
      "slug": "hello-world",
      "difficulty": 1,
      "topics": [
        "Strings"
      ]
    },
    {
      "slug": "bob",
      "difficulty": 1,
      "topics": [
        "Strings",
        "Control-flow (if-else statements)",
        "Pattern matching"
      ]
    },
    {
      "slug": "sum-of-multiples",
      "difficulty": 1,
      "topics": [
        "Filtering",
        "Sets"
      ]
    },
    {
      "slug": "leap",
      "difficulty": 1,
      "topics": [
        "Integers",
        "Mathematics"
      ]
    },
    {
      "slug": "space-age",
      "difficulty": 1,
      "topics": [
        "Dates",
        "Enumerations",
        "Domain-specific languages"
      ]
    },
    {
      "slug": "gigasecond",
      "difficulty": 1,
      "topics": [
        "Dates",
        "Time",
        "Function Overloading"
      ]
    },
    {
      "slug": "difference-of-squares",
      "difficulty": 1,
      "topics": [
        "Integers",
        "Mathematics"
      ]
    },
    {
      "slug": "pangram",
      "difficulty": 2,
      "topics": [
        "Strings"
      ]
    },
    {
      "slug": "grade-school",
      "difficulty": 2,
      "topics": [
        "Maps",
        "Sequences",
        "Sorting"
      ]
    },
    {
      "slug": "accumulate",
      "difficulty": 2,
      "topics": [
        "Generics",
        "Lists",
        "Transforming"
      ]
    },
    {
      "slug": "raindrops",
      "difficulty": 2,
      "topics": [
        "Strings",
        "Logic",
        "Transforming"
      ]
    },
    {
      "slug": "hamming",
      "difficulty": 3,
      "topics": [
        "Strings",
        "Filtering",
        "Optional values"
      ]
    },
    {
      "slug": "phone-number",
      "difficulty": 3,
      "topics": [
        "Optional values",
        "Strings",
        "Parsing",
        "Transforming"
      ]
    },
    {
      "slug": "strain",
      "difficulty": 3,
      "topics": [
        "Generics",
        "Sequences",
        "Filtering"
      ]
    },
    {
      "slug": "robot-name",
      "difficulty": 3,
      "topics": [
        "Strings",
        "Randomness"
      ]
    },
    {
      "slug": "etl",
      "difficulty": 3,
      "topics": [
        "Lists",
        "Maps",
        "Sequences",
        "Strings",
        "Transforming"
      ]
    },
    {
      "slug": "grains",
      "difficulty": 3,
      "topics": [
        "Optional values",
        "Mathematics"
      ]
    },
    {
      "slug": "scrabble-score",
      "difficulty": 3,
      "topics": [
        "Strings",
        "Transforming"
      ]
    },
    {
      "slug": "rna-transcription",
      "difficulty": 3,
      "topics": [
        "Optional values",
        "Strings",
        "Transforming"
      ]
    },
    {
      "slug": "triangle",
      "difficulty": 3,
      "topics": [
        "Enumerations",
        "Mathematics"
      ]
    },
    {
      "slug": "perfect-numbers",
      "difficulty": 3,
      "topics": [
        "Discriminated unions",
        "Enumerations",
        "Integers",
        "Mathematics"
      ]
    },
    {
      "slug": "binary-search",
      "difficulty": 3,
      "topics": [
        "Searching",
        "Arrays",
        "Optional values"
      ]
    },
    {
      "slug": "secret-handshake",
      "difficulty": 3,
      "topics": [
        "Lists",
        "Strings",
        "Bitwise operations"
      ]
    },
    {
      "slug": "sieve",
      "difficulty": 3,
      "topics": [
        "Filtering",
        "Mathematics",
        "Lists"
      ]
    },
    {
      "slug": "robot-simulator",
      "difficulty": 3,
      "topics": [
        "Enumerations",
        "Tuples"
      ]
    },
    {
      "slug": "isogram",
      "difficulty": 3,
      "topics": [
        "Strings",
        "Filtering"
      ]
    },
    {
      "slug": "clock",
      "difficulty": 3,
      "topics": [
        "Time",
        "Structural equality"
      ]
    },
    {
      "slug": "protein-translation",
      "difficulty": 3,
      "topics": [
        "Strings",
        "Transforming",
        "Sequences"
      ]
    },
    {
      "slug": "beer-song",
      "difficulty": 3,
      "topics": [
        "Text formatting",
        "Algorithms",
        "Control-flow",
        "Strings"
      ]
    },
    {
      "slug": "matrix",
      "difficulty": 4,
      "topics": [
        "Strings",
        "Matrices",
        "Parsing",
        "Vectors"
      ]
    },
    {
      "slug": "house",
      "difficulty": 4,
      "topics": [
        "Strings",
        "Text formatting",
        "Algorithms"
      ]
    },
    {
      "slug": "series",
      "difficulty": 4,
      "topics": [
        "Strings",
        "Sequences",
        "Transforming"
      ]
    },
    {
      "slug": "word-count",
      "difficulty": 4,
      "topics": [
        "Maps",
        "Strings",
        "Transforming"
      ]
    },
    {
      "slug": "anagram",
      "difficulty": 4,
      "topics": [
        "Sequences",
        "Strings",
        "Filtering"
      ]
    },
    {
      "slug": "nucleotide-count",
      "difficulty": 4,
      "topics": [
        "Maps",
        "Strings"
      ]
    },
    {
      "slug": "meetup",
      "difficulty": 4,
      "topics": [
        "Dates"
      ]
    },
    {
      "slug": "prime-factors",
      "difficulty": 4,
      "topics": [
        "Lists",
        "Integers",
        "Algorithms",
        "Mathematics"
      ]
    },
    {
      "slug": "allergies",
      "difficulty": 4,
      "topics": [
        "Lists",
        "Enumerations",
        "Filtering"
      ]
    },
    {
      "slug": "all-your-base",
      "difficulty": 4,
      "topics": [
        "Integers",
        "Lists",
        "Optional values",
        "Mathematics",
        "Transforming"
      ]
    },
    {
      "slug": "kindergarten-garden",
      "difficulty": 4,
      "topics": [
        "Enumerations",
        "Transforming",
        "Lists"
      ]
    },
    {
      "slug": "largest-series-product",
      "difficulty": 4,
      "topics": [
        "Strings",
        "Integers",
        "Optional values",
        "Transforming",
        "Mathematics"
      ]
    },
    {
      "slug": "pascals-triangle",
      "difficulty": 4,
      "topics": [
        "Control-flow (loops)",
        "Lists",
        "Mathematics"
      ]
    },
    {
      "slug": "pythagorean-triplet",
      "difficulty": 4,
      "topics": [
        "Integers",
        "Mathematics",
        "Sequences",
        "Tuples"
      ]
    },
    {
      "slug": "saddle-points",
      "difficulty": 4,
      "topics": [
        "Matrices",
        "Lists",
        "Sets",
        "Tuples"
      ]
    },
    {
      "slug": "acronym",
      "difficulty": 4,
      "topics": [
        "Strings",
        "Transforming"
      ]
    },
    {
      "slug": "run-length-encoding",
      "difficulty": 5,
      "topics": [
        "Algorithms",
        "Transforming",
        "Strings"
      ]
    },
    {
      "slug": "roman-numerals",
      "difficulty": 5,
      "topics": [
        "Sequences",
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "slug": "simple-linked-list",
      "difficulty": 5,
      "topics": [
        "Classes",
        "Lists",
        "Transforming",
        "Generics"
      ]
    },
    {
      "slug": "atbash-cipher",
      "difficulty": 5,
      "topics": [
        "Strings",
        "Transforming",
        "Security"
      ]
    },
    {
      "slug": "simple-cipher",
      "difficulty": 5,
      "topics": [
        "Optional values",
        "Strings",
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "slug": "bank-account",
      "difficulty": 5,
      "topics": [
        "Parallellism"
      ]
    },
    {
      "slug": "crypto-square",
      "difficulty": 5,
      "topics": [
        "Strings",
        "Lists",
        "Security",
        "Transforming"
      ]
    },
    {
      "slug": "bracket-push",
      "difficulty": 5,
      "topics": [
        "Strings",
        "Parsing"
      ]
    },
    {
      "slug": "queen-attack",
      "difficulty": 5,
      "topics": [
        "Strings",
        "Optional values",
        "Logic",
        "Games"
      ]
    },
    {
      "slug": "luhn",
      "difficulty": 5,
      "topics": [
        "Strings",
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "slug": "food-chain",
      "difficulty": 5,
      "topics": [
        "Text formatting",
        "Algorithms"
      ]
    },
    {
      "slug": "linked-list",
      "difficulty": 5,
      "topics": [
        "Lists",
        "Generics",
        "Optional values"
      ]
    },
    {
      "slug": "custom-set",
      "difficulty": 5,
      "topics": [
        "Sets",
        "Lists",
        "Generics"
      ]
    },
    {
      "slug": "parallel-letter-frequency",
      "difficulty": 5,
      "topics": [
        "Maps",
        "Sequences",
        "Strings",
        "Parallellism",
        "Transforming",
        "Dictionaries"
      ]
    },
    {
      "slug": "book-store",
      "difficulty": 5,
      "topics": [
        "Recursion"
      ]
    },
    {
      "slug": "nth-prime",
      "difficulty": 6,
      "topics": [
        "Optional values",
        "Algorithms",
        "Mathematics"
      ]
    },
    {
      "slug": "palindrome-products",
      "difficulty": 6,
      "topics": [
        "Sets",
        "Strings",
        "Tuples",
        "Algorithms"
      ]
    },
    {
      "slug": "ocr-numbers",
      "difficulty": 6,
      "topics": [
        "Lists",
        "Strings",
        "Parsing",
        "Pattern recognition",
        "Transforming"
      ]
    },
    {
      "slug": "pig-latin",
      "difficulty": 6,
      "topics": [
        "Strings",
        "Transforming"
      ]
    },
    {
      "slug": "binary-search-tree",
      "difficulty": 6,
      "topics": [
        "Searching",
        "Lists",
        "Trees",
        "Generics"
      ]
    },
    {
      "slug": "rail-fence-cipher",
      "difficulty": 6,
      "topics": [
        "Strings",
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "slug": "bowling",
      "difficulty": 6,
      "topics": [
        "Algorithms",
        "Control-flow (if-else statements)",
        "Lists"
      ]
    },
    {
      "slug": "dominoes",
      "difficulty": 7,
      "topics": [
        "Lists",
        "Optional values",
        "Tuples",
        "Games"
      ]
    },
    {
      "slug": "sublist",
      "difficulty": 7,
      "topics": [
        "Generics",
        "Enumerations",
        "Lists"
      ]
    },
    {
      "slug": "minesweeper",
      "difficulty": 7,
      "topics": [
        "Lists",
        "Strings",
        "Parsing",
        "Transforming"
      ]
    },
    {
      "slug": "wordy",
      "difficulty": 7,
      "topics": [
        "Mathematics",
        "Optional values",
        "Parsing",
        "Strings",
        "Transforming"
      ]
    },
    {
      "slug": "change",
      "difficulty": 7,
      "topics": [
        "Integers",
        "Lists",
        "Optional values",
        "Mathematics"
      ]
    },
    {
      "slug": "connect",
      "difficulty": 8,
      "topics": [
        "Recursion",
        "Graphs",
        "Optional values",
        "Algorithms",
        "Games",
        "Searching"
      ]
    },
    {
      "slug": "zebra-puzzle",
      "difficulty": 8,
      "topics": [
        "Logic"
      ]
    },
    {
      "slug": "say",
      "difficulty": 8,
      "topics": [
        "Strings",
        "Transforming",
        "Text formatting",
        "Optional values"
      ]
    },
    {
      "slug": "alphametics",
      "difficulty": 9,
      "topics": [
        "Maps",
        "Optional values",
        "Strings",
        "Parsing"
      ]
    },
    {
      "slug": "sgf-parsing",
      "difficulty": 9,
      "topics": [
        "Parsing",
        "Transforming"
      ]
    },
    {
      "slug": "lens-person",
      "difficulty": 9,
      "topics": [

      ]
    },
    {
      "slug": "variable-length-quantity",
      "difficulty": 9,
      "topics": [
        "Discriminated unions",
        "Lists",
        "Algorithms",
        "Bitwise operations"
      ]
    },
    {
      "slug": "zipper",
      "difficulty": 10,
      "topics": [
        "Generics",
        "Optional values",
        "Trees"
      ]
    },
    {
      "slug": "forth",
      "difficulty": 10,
      "topics": [
        "Strings",
        "Mathematics",
        "Parsing"
      ]
    }
  ],
  "deprecated": [
    "binary",
    "hexadecimal",
    "octal",
    "trinary"
  ],
  "ignored": [
    "docs",
    "img",
    "project",
    "target",
    "testgen"
  ],
  "foregone": [

  ]
}