Added class and test method for Codeland Username Validation code challenge.

quickm · quickm · commit 430d54177cd5 · 2021-02-24T19:27:45.000-08:00
diff --git a/Coderbyte_CSharp/1 Easy Challenges/EasyChallenges.txt b/Coderbyte_CSharp/1 Easy Challenges/EasyChallenges.txt
@@ -22,6 +22,6 @@ Remove Brackets     02/24/2021      StringBrackets
 Simple Adding       02/24/2021      MathSummation
 Simple Symbols      02/24/2021      StringSymbols
 String Periods      02/24/2021      StringPeriod
-Time Convert        2/10/2021	    TimeConverter
-Username Validation
-Vowel Square		2/23/2021		SquareVowels
+Time Convert        02/10/2021	    TimeConverter
+Username Validation 02/24/2021      UsernameValidation
+Vowel Square		02/23/2021		SquareVowels
diff --git a/Coderbyte_CSharp/1 Easy Challenges/UsernameValidation.cs b/Coderbyte_CSharp/1 Easy Challenges/UsernameValidation.cs
@@ -0,0 +1,82 @@
+﻿using System;
+
+namespace Coderbyte_CSharp._1_Easy_Challenges
+{
+    class UsernameValidation
+    {
+        //Have the function CodelandUsernameValidation(str) take the str parameter being
+        //    passed and determine if the string is a valid username according to the
+        //following rules :
+
+        //1. The username is between 4 and 25 characters.
+        //2. It must start with a letter.
+        //3. It can only contain letters, numbers, and the underscore character.
+        //4. It cannot end with an underscore character.
+
+        //If the username is valid then your program should return the string true,
+        //otherwise return the string false.
+
+        public string CodelandUsernameValidation(string str)
+        {
+            string result = String.Empty;
+
+            bool rule1 = ValidateLength(str);
+            bool rule2 = ValidateStartWithLetter(str);
+            bool rule3 = ValidateOnlyValidCharacters(str);
+            bool rule4 = ValidateEndCharacter(str);
+
+            result = (rule1 && rule2 && rule3 && rule4) ? "true" : "false";
+
+
+            return result;
+        }
+
+        protected bool ValidateLength(string str)
+        {
+            bool isValid = false;
+
+            int length = str.Length;
+
+            isValid = (length >= 4 && length <= 25);
+
+            return isValid;
+        }
+
+        protected bool ValidateStartWithLetter(string str)
+        {
+            bool isValid = false;
+
+            isValid = Char.IsLetter(str[0]);
+
+            return isValid;
+        }
+
+        protected bool ValidateOnlyValidCharacters(string str)
+        {
+            bool isValid = true;
+
+            foreach (char c in str)
+            {
+                if (!Char.IsLetterOrDigit(c) && c != '_')
+                {
+                    isValid = false;
+                    break;
+                }
+            }
+
+            return isValid;
+        }
+
+        protected bool ValidateEndCharacter(string str)
+        {
+            bool isValid = false;
+            int  length  = str.Length;
+
+            isValid = (str[length - 1] != '_');
+
+            return isValid;
+        }
+
+
+    }
+}
diff --git a/Coderbyte_CSharp/Coderbyte_CSharp.csproj b/Coderbyte_CSharp/Coderbyte_CSharp.csproj
@@ -63,6 +63,7 @@
     <Compile Include="1 Easy Challenges\StringSymbols.cs" />
     <Compile Include="1 Easy Challenges\StringWords.cs" />
     <Compile Include="1 Easy Challenges\TimeConverter.cs" />
+    <Compile Include="1 Easy Challenges\UsernameValidation.cs" />
     <Compile Include="2 Medium Challenges\ConsecutiveNumbers.cs" />
     <Compile Include="2 Medium Challenges\NumberEncoder.cs" />
     <Compile Include="2 Medium Challenges\PrimeNumber.cs" />
diff --git a/Coderbyte_CSharp/Program.cs b/Coderbyte_CSharp/Program.cs
@@ -36,6 +36,7 @@ static void Main(string[] args)
             tc.Test_SimpleAdding();
             tc.Test_SimpleSymbols();
             tc.Test_StringPeriods();
+            tc.Test_UsernameValidation();
 
             // Medium
             Console.WriteLine("Medium Code Challenges:");
diff --git a/Coderbyte_CSharp/TestChallenge.cs b/Coderbyte_CSharp/TestChallenge.cs
@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using Coderbyte_CSharp._1_Easy_Challenges;
 using Coderbyte_CSharp.Easy_Challenges;
 using Coderbyte_CSharp.Medium_Challenges;
 using Coderbyte_CSharp.Hard_Challenges;
@@ -418,6 +419,28 @@ public void Test_StringPeriods()
             Console.WriteLine();
         }
 
+        public void Test_UsernameValidation()
+        {
+            UsernameValidation  validation = new UsernameValidation();
+            Console.WriteLine("Username Validation:");
+
+            string str = "jgklfnklg_";
+            Console.WriteLine("Input: {0}", str);
+            Console.WriteLine("Output:  {0}", validation.CodelandUsernameValidation(str));
+            Console.WriteLine();
+
+            str = "quick_gamester";
+            Console.WriteLine("Input: {0}", str);
+            Console.WriteLine("Output:  {0}", validation.CodelandUsernameValidation(str));
+            Console.WriteLine();
+
+            str = "jkfld%jfkdsl";
+            Console.WriteLine("Input: {0}", str);
+            Console.WriteLine("Output:  {0}", validation.CodelandUsernameValidation(str));
+            Console.WriteLine();
+
+        }
+
 
         #endregion
 
