Leetcode Problem 1012. Numbers With Repeated Digits

1012. Numbers With Repeated Digits

Leetcode Solutions

Counting Numbers with Unique Digits

  1. Convert n + 1 to a list of digits.
  2. Count the number of unique digit numbers for each length less than the number of digits in n.
  3. Initialize a set to keep track of seen digits.
  4. Iterate over each digit in n.
  5. For each digit, iterate over all smaller digits that have not been seen.
  6. Add the count of unique digit numbers for the remaining positions to the result.
  7. If the current digit has been seen, break the loop as all subsequent numbers will have repeated digits.
  8. Add the current digit to the set of seen digits.
  9. Subtract the count of unique digit numbers from n to get the final result.
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Brute Force Check for Repeated Digits

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