Leetcode Problem 2802. Find The K-th Lucky Number

2802. Find The K-th Lucky Number

Leetcode Solutions

Binary Representation Conversion

  1. Increment k by 1 to account for the offset in the lucky number sequence.
  2. Convert k to its binary representation as a string.
  3. Remove the leftmost bit of the binary string since it does not correspond to the lucky number sequence.
  4. Replace all '0's in the binary string with '4's.
  5. Replace all '1's in the binary string with '7's.
  6. Return the resulting string as the kth lucky number.
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Iterative Lucky Number Construction

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