Dsa
Greedy
Medium
Pairing Socks
You have an array of integers representing different colors of socks. Each integer corresponds to a unique color. Your goal is to find the number of pairs of socks you can make, where a pair consists of two socks of the same color. Write a function that takes in the list of integers and returns the total number of pairs that can be formed.
Input:
The first line contains an integer `n` (1 ≤ n ≤ 100), the number of socks.
The second line contains `n` integers representing the colors of the socks (0 ≤ socks[i] ≤ 100).
Output:
Return the total number of pairs of socks.
Example:
Input:
9
10 20 20 10 10 30 50 10 20
Output:
3
In this example, there are three pairs: (10, 10), (20, 20), and (10, 10).
Key concepts
greedyhashingarrays
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