Leetcode Problem 2215. Find the Difference of Two Arrays

2215. Find the Difference of Two Arrays

Leetcode Solutions

HashSet Approach for Finding Distinct Elements

  1. Create a HashSet setNums1 and add all elements of nums1 to it.
  2. Create a HashSet setNums2 and add all elements of nums2 to it.
  3. Initialize two lists onlyInNums1 and onlyInNums2 to store the unique elements.
  4. Iterate over nums1 and for each element, check if it is not present in setNums2. If it is not, add it to onlyInNums1.
  5. Iterate over nums2 and for each element, check if it is not present in setNums1. If it is not, add it to onlyInNums2.
  6. Return a list containing onlyInNums1 and onlyInNums2.
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Brute Force Approach for Finding Distinct Elements

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