Leetcode Problem 2268. Minimum Number of Keypresses

2268. Minimum Number of Keypresses

Leetcode Solutions

Frequency Sorting and Greedy Assignment

  1. Initialize an array freq of size 26 to store the frequency of each character.
  2. Iterate over the string s and increment the frequency of each character in the freq array.
  3. Sort the freq array in descending order.
  4. Initialize a variable result to store the total number of keypresses.
  5. Iterate over the sorted freq array and for each character, add to result the product of its frequency and the number of keypresses required (which is determined by its position in the sorted array).
  6. Return the value of result.
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Character Frequency Mapping with Priority Queue

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