find the intersection of two maps in csharp

To find the intersection of two maps (dictionaries) in C#, you can use LINQ and the Intersect extension method. Here's an example:


main.cs
using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        Dictionary<string, int> map1 = new Dictionary<string, int> {
            { "a", 1 },
            { "b", 2 },
            { "c", 3 }
        };
        Dictionary<string, int> map2 = new Dictionary<string, int> {
            { "b", 2 },
            { "c", 3 },
            { "d", 4 }
        };

        var intersection = map1.Intersect(map2);

        foreach (var item in intersection)
        {
            Console.WriteLine("{0}: {1}", item.Key, item.Value);
        }
    }
}
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In this example, we have two dictionaries (map1 and map2) with some overlapping keys and values. We use the Intersect method to get the intersection of the two maps, which is a sequence of key-value pairs that exist in both maps.

The output of this program is: