Showing posts with label Frequency of max value hackerrank solution. Show all posts
Showing posts with label Frequency of max value hackerrank solution. Show all posts

Sunday, July 17, 2022

Frequency of Max Value | C# | HackerRank

public static List<int> FrequencyOfMaxValue(List<int> numbers,
    List<int> q)
{
    List<int> result = new List<int>();
    int n = numbers.Count;
    int[,] table = new int[2,n];
    Dictionary<int, int> counts = new Dictionary<int, int>();
    table[0,n-1] = numbers[n-1];
    table[1,n-1] = 1;
    counts.Add(numbers[n-1], 1);
    for(int i = n-2; i >= 0; i--)
    {
        if(!counts.ContainsKey(numbers[i]))
            counts.Add(numbers[i],1);
        else
            counts[numbers[i]]++;

        if(numbers[i] > table[0, i+1])
        {
            table[0,i] = numbers[i];
            table[1,i] = 1;
        }
        else
        {
            table[0,i] = table[0, i+1];
            table[1,i] = counts[table[0,i]];
        }
    }
    for(int i = 0; i < n; i++)
    {
        result.Add(table[1,q[i] - 1]);
    }
    return result;
} 

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