python Alex works at a clothing store. There is a large pile of socks that must be paired by color for sale. Given an array of integers representing the color of each sock, determine how many pairs of socks with matching colors there are. code example

Example 1: Complete the sock Merchant function in the editor below. It must return an integer representing the number of matching pairs of socks that are available.

function interview(n, arr) {
    let count = 0;
    const socks = {};

    for (let i of arr) {
        if (socks[i]) {
            socks[i] = false;
            count++
        } else {
            socks[i] = true
        }
    }
    return count
}


console.log(interview(9, [10,20,20,10,10,30,50,10,20]))
console.log(interview(100, [44,55,11,15,4,72,26,91,80,14,43,78,70,75,36,83,78,91,17,17,54,65,60,21,58,98,87,45,75,97,81,18,51,43,84,54,66,10,44,45,23,38,22,44,65,9,78,42,100,94,58,5,11,69,26,20,19,64,64,93,60,96,10,10,39,94,15,4,3,10,1,77,48,74,20,12,83,97,5,82,43,15,86,5,35,63,24,53,27,87,45,38,34,7,48,24,100,14,80,54]))
console.log(interview(100,[50,49,38,49,78,36,25,96,10,67,78,58,98,8,53,1,4,7,29,6,59,93,74,3,67,47,12,85,84,40,81,85,89,70,33,66,6,9,13,67,75,42,24,73,49,28,25,5,86,53,10,44,45,35,47,11,81,10,47,16,49,79,52,89,100,36,6,57,96,18,23,71,11,99,95,12,78,19,16,64,23,77,7,19,11,5,81,43,14,27,11,63,57,62,3,56,50,9,13,45]))

Example 2: Complete the sock Merchant function in the editor below. It must return an integer representing the number of matching pairs of socks that are available.

fun main() {
    val colors = arrayOf(10, 20, 20, 10, 10, 30, 50, 10, 20)
    var pairs = 0
    val colorFrequencies: MutableMap<Int, Int> = mutableMapOf()
    colors.forEach { color ->
        val count = colorFrequencies.getOrDefault(color, 0)
        colorFrequencies[color] = count+1
    }
    colorFrequencies.forEach { entry ->
        pairs += entry.value / 2
    }
    println(pairs)
}