Longest Binary Subsequence Less Than or Equal to K

Leetcode: a greedy problem

You are given a binary string s and a positive integer k.

Return the length of the longest subsequence of s that makes up a binary number less than or equal to k.

Note:

  • The subsequence can contain leading zeroes.
  • The empty string is considered to be equal to 0.
  • A subsequence is a string that can be derived from another string by deleting some or no characters without…

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