Leetcode Problem 1819. Number of Different Subsequences GCDs

1819. Number of Different Subsequences GCDs

Leetcode Solutions

Iterating Over All Possible GCDs

  1. Initialize a boolean array present of size maxValue + 1 to keep track of which numbers are present in nums.
  2. Iterate over nums and mark the corresponding indices in present as true.
  3. Initialize a result counter count to 0.
  4. Iterate over all possible GCD values i from 1 to maxValue.
    • For each i, initialize a variable currentGCD to 0.
    • Iterate over multiples of i that are present in nums (checked using present array).
    • Update currentGCD to be the GCD of currentGCD and the current multiple.
    • If at any point currentGCD equals i, increment count and break the loop.
  5. Return the value of count.
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