WIP

Author: Gonzalo Diaz

src/algorithm_exercises_csharp/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/RansomNote.cs

@@ -29,6 +29,9 @@ public InvalidValueException(string message, Exception innerException) : base(me
 
   public static bool checkMagazineCompute(List<string> magazine, List<string> note)
   {
+    ArgumentNullException.ThrowIfNull(magazine);
+    ArgumentNullException.ThrowIfNull(note);
+
     Dictionary<string, int> dictionary = [];
 
     foreach (string word in magazine)

src/algorithm_exercises_csharp/hackerrank/interview_preparation_kit/greedy_algorithms/MinimumAbsoluteDifferenceInAnArray.cs

@@ -11,6 +11,8 @@ public static class MinimumAbsoluteDifferenceInAnArray
    */
   public static int minimumAbsoluteDifference(List<int> arr)
   {
+    ArgumentNullException.ThrowIfNull(arr);
+
     List<int> sortedNums = [.. arr.ConvertAll(x => x).OrderBy(x => x).ToList()];
 
     // Find the minimum absolute difference

src/algorithm_exercises_csharp/hackerrank/warmup/BirthdayCakeCandles.cs

@@ -8,6 +8,8 @@ public static class BirthdayCakeCandles
 {
   public static int birthdayCakeCandles(List<int> _arr)
   {
+    ArgumentNullException.ThrowIfNull(_arr);
+
     if (_arr.Count == 0)
     {
       throw new ArgumentException("Parameter cannot be empty", nameof(_arr));

src/algorithm_exercises_csharp/hackerrank/warmup/CompareTriplets.cs

@@ -8,6 +8,9 @@ public static class CompareTriplets
 {
   public static List<int> compareTriplets(List<int> _a, List<int> _b)
   {
+    ArgumentNullException.ThrowIfNull(_a);
+    ArgumentNullException.ThrowIfNull(_b);
+
     List<int> awards = [0, 0];
 
     for (int i = 0; i < _a.Count; i++)

src/algorithm_exercises_csharp/hackerrank/warmup/DiagonalDifference.cs

@@ -8,6 +8,8 @@ public static class DiagonalDifference
 {
   public static int diagonalDifference(List<List<int>> _arr)
   {
+    ArgumentNullException.ThrowIfNull(_arr);
+
     int diag1 = 0;
     int diag2 = 0;
     int last = _arr.Count - 1;