Leetcode Problem 247. Strobogrammatic Number II

247. Strobogrammatic Number II

Leetcode Solutions

Recursive Generation of Strobogrammatic Numbers

  1. Define a recursive function generateStroboNumbers that takes the current length n and the final length finalLength as arguments.
  2. If n is 0, return a list containing an empty string. If n is 1, return a list containing '0', '1', and '8'.
  3. Recursively call generateStroboNumbers with n - 2 and finalLength to generate the inner strobogrammatic strings.
  4. For each inner string, iterate over the reversible pairs and append them to both ends of the string, ensuring not to add '0' at the beginning if the string is meant to be the final strobogrammatic number.
  5. Return the list of generated strobogrammatic numbers.
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Iterative Generation of Strobogrammatic Numbers

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