complete program profiles

1 files changed, 75 insertions, 77 deletions

diff --git a/src/Q3/README.md b/src/Q3/README.md
index 6b7f0ac..cb113bf 100644
--- a/src/Q3/README.md
+++ b/src/Q3/README.md
@@ -5,107 +5,105 @@ Student ID: 3431709
 
 1. Problem Statement:
 
-```text
-Credit card numbers follow certain patterns.
-A credit card number must have between 13 and 16 digits.
-It must start with 4 for Visa cards, 5 for Master cards, 37 for American Express cards, and 6 for Discover cards.
-In 1954, Hans Luhn of IBM proposed the following algorithm for validating credit card numbers:
-* a. Double every second digit from right to left (e.g., if number is 3 => 3 * 2 => 6) and add them together.
-* b. If this doubling results in a two-digit number, then add the two digits to get a single-digit number (e.g., if number is 5 => 5 * 2 => 10 => 1+0 => 1).
+  Credit card numbers follow certain patterns.
+  A credit card number must have between 13 and 16 digits.
+  It must start with 4 for Visa cards, 5 for Master cards, 37 for American Express cards, and 6 for Discover cards.
+  In 1954, Hans Luhn of IBM proposed the following algorithm for validating credit card numbers:
 
-So, for the credit card number 4388576018402626, doubling all second digits from the right results in
+    1. Double every second digit from right to left (e.g., if number is 3 => 3 * 2 => 6) and add them together.
+    1. If this doubling results in a two-digit number, then add the two digits to get a single-digit number (e.g., if number is 5 => 5 * 2 => 10 => 1+0 => 1).
 
-```text
- (2 * 2 = 4) + (2 * 2 = 4) + (4 * 2 = 8) + (1 * 2 = 2) + (6 * 2 = 12 = 1 + 2 = 3) + (5 * 2 = 10 = 1 + 0 = 1) + (8 * 2 = 16 = 1 + 6 = 7) + (4 * 2 = 8).
-```
+  So, for the credit card number 4388576018402626, doubling all second digits from the right results in
 
-This totals to 4 + 4 + 8 + 2 + 3 + 1 + 7 + 8 = 37.
+  (2 * 2 = 4) + (2 * 2 = 4) + (4 * 2 = 8) + (1 * 2 = 2) + (6 * 2 = 12 = 1 + 2 = 3) + (5 * 2 = 10 = 1 + 0 = 1) + (8 * 2 = 16 = 1 + 6 = 7) + (4 * 2 = 8).
 
-Add all digits in the odd places from right to left.
-The leftmost digit of the credit card number is at index 0;
+  This totals to 4 + 4 + 8 + 2 + 3 + 1 + 7 + 8 = 37.
 
-6 + 6 + 0 + 8 + 0 + 7 + 8 + 3 = 38.
+  Add all digits in the odd places from right to left.
+  The leftmost digit of the credit card number is at index 0;
 
-Add results from steps (a) and (b) and see if divisible by 10.
-If it is, then the card number is valid; otherwise invalid.
+  6 + 6 + 0 + 8 + 0 + 7 + 8 + 3 = 38.
 
-37 + 38 = 75 is not divisible by 10, so it is an invalid credit card number.
+  Add results from steps (a) and (b) and see if divisible by 10.
+  If it is, then the card number is valid; otherwise invalid.
 
-Implement Luhn’s algorithm in a program to determine whether a given credit card number is valid or not.
-You must test if the number of digits in the input is in the valid range (13 to 16), run Luhn’s algorithm to test its validity,
-and if it is valid, print the name of the company that offers that credit card number.
-```
+  37 + 38 = 75 is not divisible by 10, so it is an invalid credit card number.
 
-2. Description of the Code:
+  Implement Luhn’s algorithm in a program to determine whether a given credit card number is valid or not.
+  You must test if the number of digits in the input is in the valid range (13 to 16), run Luhn’s algorithm to test its validity,
+  and if it is valid, print the name of the company that offers that credit card number.
 
-The code implements the expected API as per the class diagram provided
-in the assignment. I also included some additional private methods to
-try to increase the readability of the code. The bulk of the logic for
-the `Luhn` algorithm takes place in the `calculateSums` method.
+1. Description of the Code:
 
-This method reverses the credit card number then loops through each
-character. As it loops through each character it checks to see if the
-current index is even or odd and applys the appropriate summing rules
-for that index.
+  The code implements the expected API as per the class diagram provided
+  in the assignment. I also included some additional private methods to
+  try to increase the readability of the code. The bulk of the logic for
+  the `Luhn` algorithm takes place in the `calculateSums` method.
 
-3. Errors and Warnings:
+  This method reverses the credit card number then loops through each
+  character. As it loops through each character it checks to see if the
+  current index is even or odd and applys the appropriate summing rules
+  for that index.
 
-Length is too short:
+1. Errors and Warnings:
 
-```bash
-java -cp target/assignment2*.jar ca.mokhan.comp268.App 3
-Enter credit card #:
-1334
-1334 in invalid
-```
+  1. Length is too short:
 
-Length is too long:
+    ```bash
+    java -cp target/assignment2*.jar ca.mokhan.comp268.App 3
+    Enter credit card #:
+    1334
+    1334 in invalid
+    ```
 
-```bash
-Enter credit card #:
-41111111111111111
-41111111111111111 in invalid
-````
+  1. Length is too long:
 
-Invalid card type:
+    ```bash
+    Enter credit card #:
+    41111111111111111
+    41111111111111111 in invalid
+    ````
 
-```bash
-Enter credit card #:
-1234567890123456
-1234567890123456 in invalid
-```
+  1. Invalid card type:
 
-4. Sample Input and Output:
+    ```bash
+    Enter credit card #:
+    1234567890123456
+    1234567890123456 in invalid
+    ```
 
-Valid AMEX card #:
+1. Sample Input and Output
 
-```bash
-Enter credit card #:
-378282246310005
-378282246310005 is offerred by American Express
-```
+  1. Valid AMEX card #:
 
-Valid Discover card #:
+    ```bash
+    Enter credit card #:
+    378282246310005
+    378282246310005 is offerred by American Express
+    ```
 
-```bash
-Enter credit card #:
-6011111111111117
-6011111111111117 is offerred by Discover
-```
+  1. Valid Discover card #:
 
-Valid MasterCard #:
+    ```bash
+    Enter credit card #:
+    6011111111111117
+    6011111111111117 is offerred by Discover
+    ```
 
-```bash
-Enter credit card #:
-5555555555554444
-5555555555554444 is offerred by MasterCard
-```
+  1. Valid MasterCard #:
 
-Valid Visa card #:
+    ```bash
+    Enter credit card #:
+    5555555555554444
+    5555555555554444 is offerred by MasterCard
+    ```
 
-```bash
-Enter credit card #:
-4012888888881881
-4012888888881881 is offerred by Visa
-```
-5. Discussion:
+  1. Valid Visa card #:
+
+    ```bash
+    Enter credit card #:
+    4012888888881881
+    4012888888881881 is offerred by Visa
+    ```
+
+1. Discussion: