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Sorting a HashMap according to keys in C#
HashMap is in Java, not C#. The equivalent of HashMap in C# is Dictionary that is used as a collection of key-value pair.
Firstly, set the Dictionary −
Dictionary<string, int> d = new Dictionary<string, int>();
d.Add("soccer", 1);
d.Add("cricket", 2);
d.Add("tennis", 3);
d.Add("rugby", 4);Now get the keys and sort them using ToList() and Sort() method respectively.
// get keys var val = d.Keys.ToList(); // sort val.Sort();
The following is the complete example to sort a HashMap according to keys −
Example
using System;
using System.Collections.Generic;
using System.Linq;
class Program {
static void Main() {
Dictionary<string, int> d = new Dictionary<string, int>()
d.Add("soccer", 1);
d.Add("cricket", 2);
d.Add("tennis", 3);
d.Add("rugby", 4);
// get keys
var val = d.Keys.ToList();
// sort
val.Sort();
// displaying sorted keys
foreach (var key in val) {
Console.WriteLine(key);
}
}
}
Updated on: 22-Jun-2020
5K+ Views
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