Problem 583. Implement a counter

Write a function that returns a function that counts the number of times it is invoked. Example:

>> h = counter;
>> h()
ans =
     1
>> h()
ans =
     2
>> h()
ans =
     3

Note: your solution cannot use persistent variables.

Solve

Solution Stats

13.42% Correct | 86.58% Incorrect
Last Solution submitted on Dec 01, 2025

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