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Leetcode Problem 791. Custom Sort String

791. Custom Sort String

Leetcode Solutions

Counting and Ordering Approach

  1. Initialize a count dictionary to store the frequency of each character in s.
  2. Iterate over each character in s and update the count dictionary.
  3. Initialize an empty result string.
  4. Iterate over each character in order. a. Append the character to the result string as many times as its count in the dictionary. b. Set the count of that character to 0 in the dictionary to indicate it's been fully added to the result.
  5. Iterate over the count dictionary. a. For characters not in order, append them to the result string as many times as their count.
  6. Return the result string.
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Sorting with Custom Comparator

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