Leetcode Problem 1521. Find a Value of a Mysterious Function Closest to Target

1521. Find a Value of a Mysterious Function Closest to Target

Leetcode Solutions

Set-based Monotonicity Approach

  1. Initialize an empty set s and a variable ans to infinity.
  2. Iterate over each element a in the array arr: a. Create a temporary set tmp and add the current element a to it. b. For each element b in the set s, add the result of a & b to tmp. c. For each element c in tmp, update ans with the minimum of ans and the absolute difference between c and target. d. Update the set s to be tmp.
  3. After iterating through the array, return ans as the result.
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Brute Force with Early Stopping

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