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  1. Lonely Integer
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Lonely Integer

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  • fazepavan
     + 0 comments
    from collections import Counter
def lonelyinteger(a):
    # Write your code here
    freq = Counter(a)
    for key, value in freq.items():
        if value == 1:
            return key

  • trupti29
     + 0 comments

    from collections import Counter

    def lonelyinteger(a): count = Counter(a) for key,val in count.items(): if val == 1: return key

  • aavotorg
     + 0 comments

    include

    include // For std::accumulate

    include

    int lonelyinteger(const std::vector& nums) { return std::accumulate(nums.begin(), nums.end(), 0, std::bit_xor()); }

    int main() { std::vector nums = {1, 1, 2, 2, 3}; // Example input std::cout << lonelyinteger(nums) << std::endl; return 0; }

  • juandadky2020
     + 0 comments

    Kotlin Solution

    fun lonelyinteger(a: Array<Int>): Int {
    return a.groupingBy { it }.eachCount().filterValues { it == 1 }.keys.first()   
}

  • marcoemorales201
     + 0 comments

    C# solution

    public static int lonelyinteger(List<int> a)
    {
        return a.Find(x => a.Count(j => x == j) == 1);
    }