Leetcode Problem 2910. Minimum Number of Groups to Create a Valid Assignment

2910. Minimum Number of Groups to Create a Valid Assignment

Leetcode Solutions

Linear Search Over Group Sizes

  1. Count the frequency of each number in nums using a Counter.
  2. Find the minimum frequency among all numbers, denoted as minFreq.
  3. Initialize the result as the length of nums (worst case scenario where each number is in its own group).
  4. Iterate over possible group sizes from 1 to minFreq.
  5. For each group size a, calculate the number of groups needed for each frequency.
  6. If the remainder after dividing a frequency by a is greater than the number of groups, the current group size is invalid.
  7. Otherwise, calculate the number of groups needed by distributing the remainder and possibly one of the groups among the rest.
  8. Update the result with the minimum number of groups required for the current group size.
  9. Return the result as the minimum number of groups needed.
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Greedy Approach with Sorting

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