How to find the Element with Minimum Number of Occurrences in a List in C# - Step by Step Examples
How to find the Element with Minimum Number of Occurrences in a List in C# ?
Answer
To find the element with the minimum number of occurrences in a list in C#, you can use a Dictionary to count the occurrences.
✐ Examples
1 Find Least Frequent Integer in List
In this example,
- We import the necessary namespaces.
- We create a list named
data
with several integer elements. - We declare a
Dictionary
to count the occurrences of each element. - We iterate through the list to populate the dictionary with counts.
- We find the element with the minimum count by iterating through the dictionary.
- Finally, we print the least common element to the console.
C# Program
using System;
using System.Collections.Generic;
using System.Linq;
class Program {
static void Main() {
List<int> data = new List<int> {1, 2, 2, 3, 3, 3, 4};
Dictionary<int, int> count = new Dictionary<int, int>();
foreach (int num in data) {
if (count.ContainsKey(num)) {
count[num]++;
} else {
count[num] = 1;
}
}
int leastCommon = data[0];
int minCount = count.Values.Min();
foreach (var pair in count) {
if (pair.Value == minCount) {
leastCommon = pair.Key;
break;
}
}
Console.WriteLine("Element with the minimum occurrences is: " + leastCommon);
}
}
Output
Element with the minimum occurrences is: 1
2 Find Least Frequent String in List
In this example,
- We import the necessary namespaces.
- We create a list named
words
with several string elements. - We declare a
Dictionary
to count the occurrences of each element. - We iterate through the list to populate the dictionary with counts.
- We find the element with the minimum count by iterating through the dictionary.
- Finally, we print the least common element to the console.
C# Program
using System;
using System.Collections.Generic;
using System.Linq;
class Program {
static void Main() {
List<string> words = new List<string> {"apple", "banana", "apple", "orange", "banana", "apple"};
Dictionary<string, int> count = new Dictionary<string, int>();
foreach (string word in words) {
if (count.ContainsKey(word)) {
count[word]++;
} else {
count[word] = 1;
}
}
string leastCommon = words[0];
int minCount = count.Values.Min();
foreach (var pair in count) {
if (pair.Value == minCount) {
leastCommon = pair.Key;
break;
}
}
Console.WriteLine("Element with the minimum occurrences is: " + leastCommon);
}
}
Output
Element with the minimum occurrences is: orange
Summary
In this tutorial, we learned How to find the Element with Minimum Number of Occurrences in a List in C# language with well detailed examples.
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