Leetcode Problem 1417. Reformat The String

1417. Reformat The String

Leetcode Solutions

Separate and Merge Approach

  1. Initialize two lists, chars and digits, to hold characters and digits respectively.
  2. Iterate over each character in the input string s.
    • If the character is a letter, append it to chars.
    • If the character is a digit, append it to digits.
  3. Compare the lengths of chars and digits.
    • If the absolute difference is greater than 1, return an empty string as it is impossible to reformat.
  4. Initialize an empty string result to build the reformatted string.
  5. Determine which list to start with (the one with more elements).
  6. Alternate between appending elements from chars and digits to result.
  7. If there is one extra element in one of the lists, append it to the appropriate end of result.
  8. Return the result string.
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Count and Construct Approach

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