Leetcode Problem 2363. Merge Similar Items

2363. Merge Similar Items

Leetcode Solutions

Using HashMap to Merge and Sum Weights

  1. Initialize an empty HashMap value_to_weight.
  2. Iterate over items1 and for each item, add its value as a key and its weight as a value to the HashMap. If the key already exists, update the value by adding the weight.
  3. Repeat step 2 for items2.
  4. Initialize an empty list result.
  5. Iterate over the sorted keys of the HashMap and for each key, append a list containing the key and its corresponding value to result.
  6. Return the result list.
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Two Pointers with Pre-Sorted Arrays

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