Dictionary max value c#
WebAug 12, 2014 · I have 3 dictionaries and need to create a new dictionary which should contain the highest number of value for the same key. For example r1 has (10, 100), r2 has (10, 200), r3 has (10, 500). The new dictionary should have 10, 500. WebSep 5, 2024 · With one pass through the dictionary, you should be able to: int max = Int32.MinValue; int min = Int32.MaxValue, foreach (var k in dictionary.keys) { if (kmaxIndex) continue; max = Math.Max (max,dictionary [k]); min = Math.Min (min,dictionary [k]); }
Dictionary max value c#
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WebMay 3, 2013 · I am trying to get key for maximum values from dictinary using follwing code var keyForMaxP1 = dict.Keys.Aggregate ( (i, j) => dict [i].P1 >= dict [j].P1 ? i : j); var keyForMaxP2 = dict.Keys.Aggregate ( (i, j) => dict [i].P2 >= dict [j].P2 ? i : j); It gives me keys for max P1 and P2 Correctly. WebAug 11, 2015 · Here you go. :-) private IDictionary myDict = new Dictionary { {1, 392.3m}, {2, 612m}, {3, 981m}, {4, 344.23m} }
WebNov 4, 2016 · A dictionary allow you to look up a value based on that value's key. Currently, you have a double as the first type (the key) and a string as the second type (the value). This would allow you to look up a string value by using a double value as a key. But wait. Your doubles are representing a percentage, while your strings represent a city name. WebMay 27, 2024 · Good way to get the key of the highest value of a Dictionary in C#. I'm trying to get the key of the maximum value in the Dictionary results. double max = results.Max (kvp => kvp.Value); return results.Where (kvp => kvp.Value == …
WebNov 4, 2024 · Converting it to a SortedDictionary alone doesn't work because I need the keys to be descending in value: var sortedDict = new SortedDictionary(dict); foreach (var k in sortedDict) { Console.WriteLine(k); } // Result: [1, a] [2, b] [3, c] // Desired result: [3, c] [2, b] [1, a] WebOct 25, 2014 · Getting key with maximum value in dictionary? 627. How to update the value stored in Dictionary in C#? 483. Get dictionary key by value. 2. Python - Find longest (most words) key in dictionary. 577. Change the name of a key in dictionary. 730. Return a default value if a dictionary key is not available. 920.
Webvar max = results.Aggregate((l, r) => l.Value > r.Value ? l : r).Key; edit: explanation for CoffeeAddict. Aggregate is the LINQ name for the commonly known functional concept Fold . It loops over each element of the set and applies whatever function you provide. Here, the function I provide is a comparison function that returns the bigger value.
WebJul 11, 2013 · var max = results.Aggregate((l, r) => l.Value > r.Value ? l : r).Key; How should I change the syntax to manage also the case in which the dictionary can contain null value. (if null, I do not want to consider that associated key, just skip that key) diabetes and neuropathy painWebFeb 28, 2016 · If you would like to return max for value equal to " val1 ", you can use Linq: C# var maxKeyOnValue = test.Where (c=>c.Value.Equals ( "val1" )).Select … diabetes and night shift workWebJun 18, 2014 · You can get First and Last Key from the SortedDictionary which would be minimum and maximum respectively. int minKey = 0; int maxKey = 0; if (panels.Keys.Count >= 2) { minKey = panels.Keys.First (); maxKey = panels.Keys.Last (); } You can also use Enumerable.Min and Enumerable.Max like: minKey = panels.Keys.Min (); maxKey = … diabetes and neuropathy socksWebAug 18, 2014 · Dictionary is a difficult choice here because there is no way to determine "age" (unless you make it part of the key or value). Something like: public void AddDataToDictionary (string key, int value) { if (queue.Count > 10000) queue.Dequeue (); queue.Enqueue (new KeyValuePair (key, value); } Share Improve this answer Follow diabetes and native american populationWebDictionaries in .NET use a hash table lookup scheme, so adding entries has very little, if any, effect on lookup performance. The only issue you will have might be memory usage. A dictionary of 3000 items will consume roughly 3000 times the storage used by the key plus the value types. diabetes and my eyesWebDec 11, 2012 · The key is to map the keys to values first, and then you can easily determine the max/min. var query = list.Select (key => items [key]).ToList (); int max = query.Max (); int min = query.Min (); Yes, I was just trying that. Is ToList needed? Can't leave it as IEnumerable? Hi, no its not needed for most of the cases . cinden nutritionalsWebMay 3, 2013 · I have a Dictionary of type. Dictionary where GValue is an object that contains two double values P1 and P2. How can I get max P1 and P2 from … diabetes and numbness and tingling