CODEWITHSUNDEEP
c#c#-4.0c#-3.0
Mulesoft Developer
Mulesoft Developer

Reputation: 2824

get sum of the same element from the list

I want to get sum from the list using generics as like

List<Name,Value> test=new List<Name,Value>();
E.g list contain these element
test.Add(One,5);
test.Add(Second,5);
test.Add(Third,5);
test.Add(One,5);
test.Add(One,5);
test.Add(Second,5);

At the end want to get value as like Element with One name contain value 15 Element with Second name contain value 10 Element with Third name contain value 5

I don't want to iterate each element manually. This is not an exact syntax, it an idea.

Upvotes: 1

Views: 2074

Answers (2)

Mithrandir
Mithrandir

Reputation: 25337

Try :

List<KeyValuePair<string, int>> test = new List<KeyValuePair<string, int>>();
test.Add(new KeyValuePair<string,int>("One",5));
test.Add(new KeyValuePair<string,int>("Second",5));
test.Add(new KeyValuePair<string,int>("Third",5));
test.Add(new KeyValuePair<string,int>("One",5));
test.Add(new KeyValuePair<string,int>("One",5));
test.Add(new KeyValuePair<string,int>("Second",5));

var sum = test.Where( x => x.Key == "One" ).Sum( y => y.Value );

Upvotes: 0

Shoaib Shaikh
Shoaib Shaikh

Reputation: 4585

do you need something like this

            List<KeyValuePair<string, int>> test = new List<KeyValuePair<string, int>>();
test.Add(new KeyValuePair<string,int>("One",5));
test.Add(new KeyValuePair<string,int>("Second",5));
test.Add(new KeyValuePair<string,int>("Third",5));
test.Add(new KeyValuePair<string,int>("One",5));
test.Add(new KeyValuePair<string,int>("One",5));
test.Add(new KeyValuePair<string,int>("Second",5));

var result = test.GroupBy(r => r.Key).Select(r => new KeyValuePair<string, int>(r.Key, r.Sum(p => p.Value))).ToList();

Upvotes: 6

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