Leetcode Problem 1461. Check If a String Contains All Binary Codes of Size K

1461. Check If a String Contains All Binary Codes of Size K

Leetcode Solutions

Approach: Set

  1. Initialize an empty set to store unique substrings of length k.
  2. Calculate the total number of possible binary codes of length k, which is 2k2^k.
  3. Iterate through the string s from index 0 to len(s) - k.
  4. In each iteration, extract the substring of length k starting at the current index.
  5. Add the extracted substring to the set.
  6. If at any point the size of the set equals 2k2^k, return true.
  7. If the end of the string is reached and the set size is less than 2k2^k, return false.
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Approach: Rolling Hash

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