Leetcode Problem 1558. Minimum Numbers of Function Calls to Make Target Array

1558. Minimum Numbers of Function Calls to Make Target Array

Leetcode Solutions

Bit Manipulation and Greedy Approach

  1. Initialize total_operations to 0, which will store the total minimum operations needed.
  2. Initialize max_doublings to 0, which will store the maximum number of doubling operations needed for any number in nums.
  3. Iterate over each number in nums: a. For the current number, initialize doublings to 0. b. While the current number is greater than 0: i. If the current number is odd, increment total_operations (for the increment operation) and decrement the number by 1. ii. Right shift the current number by 1 (divide by 2), and increment doublings. c. Update max_doublings to be the maximum of itself and doublings.
  4. Add max_doublings to total_operations (for the doubling operations).
  5. Return total_operations as the result.
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Brute Force with Optimization

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