Dictionary — word count #80

Medium 30 pts New · no attempts yet csharp

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Count occurrences with Dictionary<string,int>.

Static hints

TryGetValue or dict[key]

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Official solution

using System;

class Program
{
    static void Main()
    {
        using System.Collections.Generic;
        var freq = new Dictionary<string, int> { ["a"] = 2, ["b"] = 1 };
        Console.WriteLine(freq["a"]);
    }
}

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Explanation

Dictionary gives O(1) average lookup—hash map interviews.

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Dictionary — word count #80

Stuck? Get a nudge — not the answer

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