mobile typing isn't scored — practice only
Map<String, Integer> counts = new HashMap<>();
Java · general · type the snippet below to practice
def fib(n):
a, b = 0, 1
for _ in range(n):
a, b = b, a + b
return a
about this snippet
This is the hashmap snippet in Java — 6 lines of real Java code that exercises common patterns you'll see in production. DeveloperType scores you on net WPM and accuracy and only counts runs above 95% accuracy on the leaderboard, so practice rewards precision, not speed alone.
view source (6 lines)
Map<String, Integer> counts = new HashMap<>();
for (String word : words) {
counts.merge(word, 1, Integer::sum);
}
return counts;
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