Apply code review

Author: BNAndras

config.json

@@ -2735,8 +2735,16 @@
         "slug": "relative-distance",
         "name": "Relative Distance",
         "uuid": "4f4229ce-5a2a-415c-a682-6a56cf3846ac",
-        "practices": [],
-        "prerequisites": [],
+        "practices": [
+          "constructors",
+          "dictionaries"
+        ],
+        "prerequisites": [
+          "arrays",
+          "classes",
+          "constructors",
+          "dictionaries"
+        ],
         "difficulty": 5
       },
       {

exercises/practice/relative-distance/.meta/Example.cs

@@ -2,7 +2,7 @@ public class RelativeDistance
 {
     private readonly Dictionary<string, HashSet<string>> relatives;
 
-    public RelativeDistance(Dictionary<string, List<string>> familyTree)
+    public RelativeDistance(Dictionary<string, string[]> familyTree)
     {
         Dictionary<string, HashSet<string>>  parsed = new();
         foreach (var (parent, children) in familyTree)

exercises/practice/relative-distance/RelativeDistance.cs

@@ -1,6 +1,6 @@
 public class RelativeDistance
 {   
-    public RelativeDistance(Dictionary<string, List<string>> familyTree)
+    public RelativeDistance(Dictionary<string, string[]> familyTree)
     {
         throw new NotImplementedException("You need to implement this method.");
     }

exercises/practice/relative-distance/RelativeDistanceTests.cs

@@ -3,7 +3,7 @@ public class RelativeDistanceTests
     [Fact]
     public void Direct_parent_child_relation()
     {
-        var familyTree = new Dictionary<string, List<string>>
+        var familyTree = new Dictionary<string, string[]>
         {
             { "Aditi", ["Bao"] },
             { "Bao", ["Carlos"] },
@@ -16,7 +16,7 @@ public void Direct_parent_child_relation()
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Sibling_relationship()
     {
-        var familyTree = new Dictionary<string, List<string>>
+        var familyTree = new Dictionary<string, string[]>
         {
             { "Dalia", ["Olga", "Yassin"] },
         };
@@ -27,7 +27,7 @@ public void Sibling_relationship()
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Two_degrees_of_separation_grandchild()
     {
-        var familyTree = new Dictionary<string, List<string>>
+        var familyTree = new Dictionary<string, string[]>
         {
             { "Khadija", ["Mateo"] },
             { "Mateo", ["Rami"] }
@@ -39,7 +39,7 @@ public void Two_degrees_of_separation_grandchild()
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Unrelated_individuals()
     {
-        var familyTree = new Dictionary<string, List<string>>
+        var familyTree = new Dictionary<string, string[]>
         {
             { "Priya", ["Rami"] },
             { "Kaito", ["Elif"] }
@@ -51,7 +51,7 @@ public void Unrelated_individuals()
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Complex_graph_cousins()
     {
-        var familyTree = new Dictionary<string, List<string>>
+        var familyTree = new Dictionary<string, string[]>
         {
             { "Aiko", ["Bao", "Carlos"] },
             { "Bao", ["Dalia", "Elias"] },
@@ -113,7 +113,7 @@ public void Complex_graph_cousins()
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Complex_graph_far_removed_nephew()
     {
-        var familyTree = new Dictionary<string, List<string>>
+        var familyTree = new Dictionary<string, string[]>
         {
             { "Mina", ["Viktor", "Wang"] },
             { "Olga", ["Yuki"] },
@@ -175,7 +175,7 @@ public void Complex_graph_far_removed_nephew()
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Complex_graph_cousins_several_times_removed()
     {
-        var familyTree = new Dictionary<string, List<string>>
+        var familyTree = new Dictionary<string, string[]>
         {
             { "Mina", ["Viktor", "Wang"] },
             { "Olga", ["Yuki"] },