Leetcode Problem 2197. Replace Non-Coprime Numbers in Array

2197. Replace Non-Coprime Numbers in Array

Leetcode Solutions

Stack-Based Approach with GCD and LCM

  1. Initialize an empty stack.
  2. Iterate through each number in the input array.
  3. For each number, check if the stack is not empty and the GCD of the current number and the stack's top is greater than 1.
  4. If they are non-coprime, calculate the LCM of the two numbers and replace the stack's top with the LCM.
  5. Repeat step 3 until the stack's top and the current number are coprime.
  6. Push the current number onto the stack if it was not merged.
  7. After processing all numbers, convert the stack to a list and return it as the final result.
UML Thumbnail

Brute Force with List Modification

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