Leetcode Problem 2341. Maximum Number of Pairs in Array

2341. Maximum Number of Pairs in Array

Leetcode Solutions

Using HashMap to Count Pairs and Leftover Integers

  • Initialize a HashMap to store the count of each integer in the array.\n- Iterate over the array, updating the count for each integer in the HashMap.\n- Initialize variables to store the number of pairs and the number of leftovers.\n- Iterate over the values in the HashMap.\n - For each count, increment the number of pairs by count / 2.\n - Increment the number of leftovers by count % 2.\n- Return an array containing the number of pairs and the number of leftovers.
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Sorting and Pairing Approach

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