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📜 WAYPOINT LESSON

Checkpoint — Strings

⭐ beginner⏳ 20 min read📍 Lesson 25 of 85

Initials and a password strength probe: slicing, classification, and case discipline in one program.

Checkpoint: identity utilities

Task: implement two methods:

  1. static string Initials(string fullName) — the first letter of each whitespace-separated word, uppercased, joined. "nguyen van an" → "NVA". Null/empty/blank yields "".
  2. static int PasswordScore(string pw) — score: 1 if length ≥ 8, plus 1 if it contains any digit, plus 1 if it contains any uppercase letter. Null or empty scores 0. So "Abcdefgh1" scores 3; "abcdefgh" scores 1.