Leetcode Problem 2135. Count Words Obtained After Adding a Letter

2135. Count Words Obtained After Adding a Letter

Leetcode Solutions

Using Sorting and Hash Set

  1. Initialize an empty hash set startSet.
  2. For each word in startWords, sort the characters and add the sorted string to startSet.
  3. Initialize count to 0 to keep track of the number of valid targetWords.
  4. For each word in targetWords, sort the characters.
  5. For each character in the sorted targetWord, remove the character and check if the resulting string is in startSet.
  6. If it is, increment count and break out of the loop to avoid double-counting.
  7. Return count.
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Using Bitmasking

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