Exercise: NATO alphabet trainer

NATO phonetic alphabet

The user gets a random word to spell. If the word is for example "dog", the user has to type "delta oscar golf".

Record how fast the user spells a word. You can use System.currentTimeMillis() to get the current time in milliseconds.

The user plays three rounds, spelling three words.

At the end of the game, the user sees how fast on average they spelled each character.

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🪖 Welcome to the NATO phonetic alphabet trainer! 📡 How fast can you spell a word using the phonetic alphabet? Round 1 of 3 Spell the word "cat" charlie alfa tango You took 11.6 seconds to spell the word. Correct! 🎉 Round 2 of 3 Spell the word "typing" tango yankee papa india november golf You took 14.3 seconds to spell the word. Correct! 🎉 Round 3 of 3 Spell the word "Ryan" romeo yankee alfa november You took 8.53 seconds to spell the word. Correct! 🎉 You spelled 3 out of 3 words correctly. You had to spell 13 characters in total. Average time per character: 2.65 seconds.

Hints 💡

Use an array to store the words to spell.
Use an array to store the NATO code words, such as "Alfa", "Bravo", "Charlie".
Character.toUpperCase makes a char uppercase.
You can use equalsIgnoreCase to compare two strings, ignoring differences in case. For example, "Zulu" and "zuLU" are equal according to equalsIgnoreCase.

You might use this method to convert milliseconds to a string representation of seconds:

static String msToSeconds(long milliseconds) {
  // Return the seconds as, for example, "1.52"
  String seconds = String.valueOf(milliseconds / 1000.0);
  if (seconds.length() > 4) {
    seconds = seconds.substring(0, 4);
  }
  return seconds;
}

Exercise: NATO alphabet trainer

Hints 💡

Hand in instructions