seed: curriculum content

1.solar-system/3.strings/05.the-mirror/index.md

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+---
+type: challenge
+title: "The Mirror"
+xp: 75
+duration: 30
+difficulty: 3
+---
+
+# The Mirror
+
+> **[INCOMING — Mission Control, Earth]**
+>
+> Cadet, a *palindrome* reads the same forwards and backwards.
+> `racecar`. `level`. `madam`.
+>
+> A reverse-slice flips a string in one move:
+>
+> ```python
+> "Hello"[::-1]    # "olleH"
+> ```
+>
+> A string is a palindrome when it equals its reverse. The `==`
+> operator returns `True` or `False` directly.
+>
+> Implement `mirror(s)` that returns a dict with three keys:
+>
+> - `original` — the input
+> - `reversed` — the input reversed
+> - `palindrome` — `True` if equal to its reverse
+>
+> Match case exactly — `racecar` and `RaceCar` are different inputs.
+>
+> [END TRANSMISSION]
+
+## Your Task
+
+In `starter/starter.py`, build the dict using `[::-1]` and `==`.
+
+## Objectives
+
+- `mirror("racecar")["palindrome"]` is `True`
+- `mirror("hello")["palindrome"]` is `False`
+- All three keys correct for any input string