LeetCode/go/divide-array-into-equal-pairs.go

package main

import (
	hs "github.com/emirpasic/gods/v2/sets/hashset"
)

func divideArray(nums []int) bool {
	seen := hs.New[int]()

	for _, x := range nums {
		if seen.Contains(x) {
			seen.Remove(x)
		} else {
			seen.Add(x)
		}
	}

	return seen.Empty()
}