using System;
using System.Collections.Generic;
class Program
{
static List<int> GetUniqueExcludeDuplicates(List<int> lst) {
Dictionary<int, int> frequency = new Dictionary<int, int>(); // To count occurrences of each number
List<int> result = new List<int>(); // To store unique values (excluding duplicates)
// Count frequencies of each number in the list
foreach (int num in lst) {
if (frequency.ContainsKey(num)) {
frequency[num]++;
}
else {
frequency[num] = 1;
}
}
// Collect numbers that appear only once
foreach (int num in lst) {
if (frequency[num] == 1) {
result.Add(num); // Add to result if it's truly unique
}
}
return result;
}
static void Main(string[] args) {
List<int> lst = new List<int> { 1, 2, 3, 5, 8, 3, 1, 1, 0, 6, 5, 7, 3, 1, 4, 9 };
List<int> uniqueValues = GetUniqueExcludeDuplicates(lst);
Console.Write("Unique values (excluding duplicates): ");
foreach (int num in uniqueValues) {
Console.Write(num + " ");
}
Console.WriteLine();
}
}
/*
run:
Unique values (excluding duplicates): 2 8 0 6 7 4 9
*/
