Grokking the Coding Interview Patterns in C++/

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Solution: Find The K-th Lucky Number

Solution: Find The K-th Lucky Number

Let’s solve the Find The K-th Lucky Number problem using the Bitwise Manipulation pattern.

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Statement

A number is called lucky if it comprises only the digits 44 and 77. Your task is to return the k-th lucky number as a string for a given integer k. 

Constraints:

  • 1<=1 <= ...

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