Lj lesson 06 Pull Request: Created mathematic expression methods and integrated them

lesson_04/ljmcwilliams/README.md

@@ -0,0 +1,59 @@
+In this lesson, I explored the differences between Java and JavaScript. Despite their similar names, these languages have distinct features.
+
+- ## Key Differences
+- ### Document Preparation:
+
+    - Java requires preparation before defining variables and functions.
+JavaScript has more flexibility with variable definitions.
+
+- ### User Input:
+
+    - In Java, I used the Scanner class to prompt the user for number input.
+This required importing Java's Scanner class.
+In JavaScript, there is no built-in Scanner class, so I used Node.js as a workaround.
+With Node.js, I utilized process.stdin for input and process.stdout for output (similar to console.log).
+
+- ### Loop Control:
+
+    - Both languages allow for loops to be exited early, but the methods differ:
+In Java, using a break statement within the loop will terminate it.
+In JavaScript, I opted for read.close(), which achieves a similar effect.
+
+- ### Variable Declaration:
+
+    - Java requires explicit declaration of variable types.
+JavaScript automatically assigns variable types.
+- ## Loop Behavior
+Both languages share similarities in loop functionality:
+
+- **For Loops**:
+    - Take three expressions.
+
+- **If Statements**:
+    - Accept a condition and can be nested.
+
+- **Java Example**
+```java
+for (int i = 2; i < userInput; i++) {
+            if ((userInput / i) == (int) (userInput / i)) {
+                System.out.println(userInput + " is not a prime number.");
+                isConditionMet = true;
+                break;
+            }
+        } if (!isConditionMet) {
+            System.out.println(userInput + " is a prime number.");
+        }
+```
+- **JavaScript Example**
+```javascript
+for (let i = 2; i < answer; i++) {
+            if ((answer / i) == parseInt(answer / i)) {
+                console.log(answer + " is not a prime number.");
+                isConditionMet = true;
+                read.close();
+            }
+        } if (!isConditionMet) {
+            console.log(answer + " is a prime number.");
+            read.close();
+        }
+```

lesson_04/ljmcwilliams/findPrimeNum.java

@@ -0,0 +1,32 @@
+import java.util.Scanner; //This allows us to use the scanner to take in user input
+public class findPrimeNum {
+    public static void main(String[] args) {
+        Scanner objScanner = new Scanner(System.in); //A scanner named 'objScanner'
+        boolean isConditionMet = false; 
+
+        /*if the condition is met, the print statement within the loop will be printed. 
+        If not, the print statement after the loop will be printed*/
+
+        System.out.print("Please enter a whole number: "); //User input prompt
+        double userInput = objScanner.nextDouble(); //This reads an integer value from the user
+
+        /*to determine a number's primality, we can check to see if the division 
+        of that number by 2 to (1 - that number) results in any whole number quotients.
+        Once we do the division we can compare that number to (int) number to see if the
+        values are equal.*/
+
+        /*the program should end if A: the first whole number quotient is found, indicating that
+         * indicating a number is not prime or if B: no whole number quotients are found within the
+         * range indicating the number IS prime.*/
+
+         for (int i = 2; i < userInput; i++) {
+            if ((userInput / i) == (int) (userInput / i)) {
+                System.out.println(userInput + " is not a prime number.");
+                isConditionMet = true;
+                break; //this helps jump out of the loop once this first whole number quotient instace is found
+            }
+        } if (!isConditionMet) {
+            System.out.println(userInput + " is a prime number.");
+        }
+    }
+}

lesson_04/ljmcwilliams/findPrimeNum.js

@@ -0,0 +1,21 @@
+const readline = require('readline'); //"require()" imports the readline module which will process the user input
+const read = readline.createInterface({
+    input: process.stdin, //this acts as an input scanner
+    output: process.stdout //this works like a normal console.log combined with a user's input
+});
+let isConditionMet = false;
+
+/* When looking at the Node.js docs, it states '.question()' displays the query (in this case the user prompt).
+It waits for an input and uses it as the first argument in a callback function (here I am using a arrow function). */
+read.question("Enter a number: ", (answer) => {
+    for (let i = 2; i < answer; i++) {
+            if ((answer / i) == parseInt(answer / i)) { //similar to the "(int)" statement in java, parseInt converts doubles to ints
+                console.log(answer + " is not a prime number.");
+                isConditionMet = true;
+                read.close(); //this works similar to a break statement in java and ends the program
+            }
+        } if (!isConditionMet) {
+            console.log(answer + " is a prime number.");
+            read.close();
+        }
+})

lesson_05/ljmcwilliams/README.md

@@ -0,0 +1,84 @@
+## User Story 1: Offline Learning Mode for Language App
+<b>As a</b> language learner,<br><b>I want</b> an offline mode in the language learning app,<br><b>so I</b> can continue learning without an internet connection.
+
+### Acceptance Criteria
+<ol>
+    <li><b>Access to Lessons:</b>
+        <ul>
+            <li>Users can download specific lessons and exercises for offline access.</li>
+            <li>A clear indicator shows which lessons are available for offline use.</li>
+        </ul>
+    </li>
+    <li><b>Content Availability:</b>
+        <ul>
+            <li>All downloaded lessons should be fully functional without an internet connection.</li>
+            <li>Any media (audio, video) within the lessons must be accessible offline.</li>
+        </ul>
+    </li>
+    <li><b>Sync Progress:</b>
+        <ul>
+            <li>Users’ progress should sync automatically when the app reconnects to the internet.</li>
+            <li>Any completed lessons or exercises should be saved and updated in the user’s profile once online.</li>
+        </ul>
+    </li>
+</ol>
+
+## User Story 2: Receive E-Statements for Bank Account
+<b>As a</b> customer,<br><b>I want</b> to receive e-statements for my bank account,<br><b>so I</b> can reduce paper waste.
+
+### Acceptance Criteria
+<ol>
+    <li><b>Customer Information Validation:</b>
+        <ul>
+            <li>The system verifies that the customer has a valid and active email address before enabling e-statement delivery.</li>
+            <li>If the email address is invalid, the system prompts the user to update their information.</li>
+        </ul>
+    </li>
+    <li><b>E-statement Delivery</b>
+        <ul>
+            <li>E-statements must be sent to the customer’s registered email address monthly (or according to the account’s statement cycle).</li>
+            <li>The email subject line should clearly indicate it is a bank statement (e.g., "[Bank Name] - Your Monthly Statement for [Month]").</li>
+            <li>The e-statement must be attached as a PDF file.
+</li>
+        </ul>
+    </li>
+    <li><b>Notification Preferences Management:</b>
+        <ul>
+            <li>The customer must be able to modify their email address or opt out of e-statements at any time through the bank's website or mobile app.</li>
+            <li>Upon opting out, the customer should receive a confirmation message, and the system should revert to sending paper statements.</li>
+        </ul>
+    </li>
+</ol>
+
+## User Story 3: Keyboard Navigation for Faster Programming
+<b>As a</b> software engineer,<br><b>I want</b> to be able to navigate the IDE using keyboard shortcuts,<br><b>so that I</b> can perform actions more quickly.
+
+### Acceptance Criteria
+<ol>
+    <li><b>Shortcut configuration:</b></li>
+        <ul>
+            <li>The IDE must provide a default set of keyboard shortcuts for common actions (e.g., opening files, saving files, navigating between files, searching, etc.).</li>
+            <li>The software engineer must be able to customize keyboard shortcuts through the IDE settings/preferences menu.</li>
+            <li>There must be an option to reset all keyboard shortcuts to their default settings.</li>
+        </ul>
+    <li><b>Common actions support:</b></li>
+        <ul>
+            <li>
+            The following common actions must be accessible via keyboard shortcuts:
+                <ul>
+                <li>Opening, closing, and saving files.</li>
+                <li>Navigating between open tabs or files.</li>
+                <li>Searching within the file and across the project.</li>
+                <li>Running and debugging the code.</li>
+                <li>Copying, pasting, and duplicating lines of code.</li>
+                <li>Formatting code and applying indentation.</li>
+                <li>Commenting and uncommenting lines or blocks of code.</li>
+                </ul>
+            </li>
+        </ul>
+    <li><b>Shortcut discoverability:</b></li>
+        <ul>
+            <li>The IDE must provide a way to view all available keyboard shortcuts (e.g., a "Keyboard Shortcuts" menu or help section).</li>
+            <li>When hovering over action buttons in the IDE interface, the corresponding keyboard shortcut must be displayed in the tooltip.</li>
+        </ul>
+</ol>

lesson_05/quiz/src/lesson5.ts

@@ -38,7 +38,7 @@ export class Lesson5 {
         [AnswerChoice.C, "To insert an image"],
         [AnswerChoice.D, "To create a paragraph"],
       ]),
-      AnswerChoice.UNANSWERED,
+      AnswerChoice.B,
     );
   }
 
@@ -52,7 +52,7 @@ export class Lesson5 {
         [AnswerChoice.C, "alt"],
         [AnswerChoice.D, "href"],
       ]),
-      AnswerChoice.UNANSWERED,
+      AnswerChoice.C,
     );
   }
 
@@ -66,7 +66,7 @@ export class Lesson5 {
         [AnswerChoice.C, "<div>"],
         [AnswerChoice.D, "<link>"],
       ]),
-      AnswerChoice.UNANSWERED,
+      AnswerChoice.B,
     );
   }
 
@@ -80,7 +80,7 @@ export class Lesson5 {
         [AnswerChoice.C, "<span>"],
         [AnswerChoice.D, "<br>"],
       ]),
-      AnswerChoice.UNANSWERED,
+      AnswerChoice.B,
     );
   }
 
@@ -94,7 +94,7 @@ export class Lesson5 {
         [AnswerChoice.C, "Computer Style Sheets"],
         [AnswerChoice.D, "Cascading System Sheets"],
       ]),
-      AnswerChoice.UNANSWERED,
+      AnswerChoice.B,
     );
   }
 
@@ -108,7 +108,7 @@ export class Lesson5 {
         [AnswerChoice.C, "text-color"],
         [AnswerChoice.D, "background-color"],
       ]),
-      AnswerChoice.UNANSWERED,
+      AnswerChoice.B,
     );
   }
 
@@ -122,7 +122,7 @@ export class Lesson5 {
         [AnswerChoice.C, "/* this is a comment */"],
         [AnswerChoice.D, "<!-- this is a comment -->"],
       ]),
-      AnswerChoice.UNANSWERED,
+      AnswerChoice.C,
     );
   }
 
@@ -136,7 +136,7 @@ export class Lesson5 {
         [AnswerChoice.C, "text-size"],
         [AnswerChoice.D, "text-style"],
       ]),
-      AnswerChoice.UNANSWERED,
+      AnswerChoice.B,
     );
   }
 
@@ -150,7 +150,7 @@ export class Lesson5 {
         [AnswerChoice.C, "inline-block"],
         [AnswerChoice.D, "none"],
       ]),
-      AnswerChoice.UNANSWERED,
+      AnswerChoice.B,
     );
   }
 
@@ -164,7 +164,7 @@ export class Lesson5 {
         [AnswerChoice.C, "<stylesheet link='styles.css'>"],
         [AnswerChoice.D, "<css href='styles.css'>"],
       ]),
-      AnswerChoice.UNANSWERED,
+      AnswerChoice.A,
     );
   }
 }

lesson_06/expression/src/expression_calculator.ts

@@ -2,10 +2,25 @@ export class ExpressionCalculator {
   /** Returns the calculation of ((a + b) * c) / d^e */
   calculate(a: number, b: number, c: number, d: number, e: number): number {
     // Implement your code here to return the correct value.
-    return 0;
+    const sum = this.add(a, b);
+    const product = this.multiply(sum, c);
+    const exp = this.pow(d, e);
+    const quotient = this.divide(product, exp);
+    return quotient;
   }
 
   pow(base: number, exponent: number): number {
     return Math.pow(base, exponent);
   }
+  add(addendA: number, addendB: number): number {
+    return addendA + addendB;
+  }
+  divide(dividend: number, divisor: number): number {
+    return dividend / divisor;
+  }
+  multiply(factorA: number, factorB: number): number {
+    return factorA * factorB;
+  }
 }
+
+//divide(multiply(add(a, b), c), pow(d, e))