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  1. Sales by Match
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Sales by Match

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355 Discussions

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  • outsider973
     + 0 comments
       public static int sockMerchant(int n, List<Integer> ar) {
    // Write your code here
        var set = new HashSet<>();
        var numberPairs = 0;
        
        for (int sock : ar) {
            if (!set.add(sock)) {
                set.remove(sock);
                numberPairs++;
            }
        }
        return numberPairs;

    }

  • s_hmnd
     + 0 comments
    #Sorting, and counting stocks with same color, and division is not necesary
def sockMerchant(n, ar):
    p = defaultdict(bool)
    c=0
    for num in ar:
        if not p[num]:
            p[num] = True
        else:
            c += 1
            p[num] = False
    return c

  • anarod_val25
     + 0 comments

    `

    int sockMerchant(int n, vector ar) { std::sort(ar.begin(),ar.end()); int pairs = 0;

    for (int i = 0; i < n - 1;) {
    if (ar[i] == ar[i + 1]) {
        pairs++;
        i += 2; 
    } else {
        i += 1; 
    }
}    
return pairs;

    }

    `

  • mark_m_k_lin
     + 0 comments

    C++ with basic code: int sockMerchant(int n, vector ar) { int n_pair = 0; int j = 0; stable_sort(ar.begin(), ar.end()); for (int i = 0; i < n; i++) { if ((ar[i + j] == ar[i+j+1]) && (j + i + 1 < n)) { n_pair += 1; j += 1; } } return n_pair; }

  • fazepavan
     + 1 comment
    from collections import Counter
def sockMerchant(n, ar):
    # Write your code here
    count = 0
    socks = Counter(ar)
    for key, value in socks.items():
        if value >= 2:
            count += value//2
    
    return count