{
  "schema": "ml-prep/item@1",
  "item": {
    "id": "mit-6-100l-finger-05",
    "area": "programming",
    "topic": "control-flow",
    "origin": "external",
    "title": "Even-indexed characters finger exercise",
    "skills": [
      "conditionals",
      "loops",
      "strings"
    ],
    "priority": "foundation",
    "difficulty": "easy",
    "estimated_minutes": 5,
    "prerequisites": [
      "string-indexing"
    ],
    "source_id": "mit-6-100l-f2022",
    "locator": {
      "document": "Finger Exercises",
      "label": "Finger Exercise Lecture 5"
    },
    "links": {
      "problem": "https://ocw.mit.edu/courses/6-100l-introduction-to-cs-and-programming-using-python-fall-2022/pages/finger-exercises/#finger-exercise-lecture-5",
      "solution": "https://ocw.mit.edu/courses/6-100l-introduction-to-cs-and-programming-using-python-fall-2022/resources/mit6_100l_f22_ex05_sol_pdf/"
    },
    "selection_note": "Uses a compact string traversal to test index parity, loop state, and output construction.",
    "answer_status": "official-solution"
  }
}