Address remaining review feedback on random and percentage-change

Author: salahalsabhi

Sprint-2/1-key-exercises/4-random.js

@@ -8,4 +8,34 @@ console.log(num);
 // Try breaking down the expression and using documentation to explain what it means
 // It will help to think about the order in which expressions are evaluated
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
-// num is a random whole number between 1 and 100
+<<<<<<< Updated upstream
+// num is a random whole number between 1 and 100
+=======
+
+// Breakdown of: Math.floor(Math.random() * (maximum - minimum + 1)) + minimum
+//
+// 1) (maximum - minimum + 1)
+//    → 100 - 1 + 1 = 100
+//    This is the count of whole numbers from minimum to maximum.
+//
+// 2) Math.random()
+//    → a decimal number greater than or equal to 0 and less than 1
+//    Example: 0.374
+//
+// 3) Math.random() * (maximum - minimum + 1)
+//    → multiplies that decimal by 100
+//    → a number from 0 up to 100 
+//    Example: 0.374 * 100 = 37.4
+//
+// 4) Math.floor(...)
+//    → rounds down to the nearest whole number
+//    → gives 0, 1, 2, ... 99
+//    Example: Math.floor(37.4) = 37
+//
+// 5) + minimum
+//    → adds 1, so the range shifts from 0–99 to 1–100
+//    Example: 37 + 1 = 38
+//
+// Final meaning:
+// num is a random whole number between 1 and 100.
+>>>>>>> Stashed changes

Sprint-2/3-mandatory-interpret/1-percentage-change.js

@@ -8,13 +8,17 @@ const priceDifference = carPrice - priceAfterOneYear;
 const percentageChange = (priceDifference / carPrice) * 100;
 
 console.log(`The price difference is ${priceDifference}`);
+<<<<<<< Updated upstream
 
 
+=======
+>>>>>>> Stashed changes
 console.log(`The percentage change is ${percentageChange}%`);
 
 // Read the code and then answer the questions below
 
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
+<<<<<<< Updated upstream
 // Answer: 6 function calls.
 
 // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
@@ -35,3 +39,32 @@ console.log(`The percentage change is ${percentageChange}%`);
 // Answer: carPrice.replaceAll(",","") remove commas from the string.
 //         Number(...) changes the text to a number so subtraction and division work correctly.
 
+=======
+// Answer: 6 function calls:
+// - Line 4: replaceAll(",", "") and Number(...)
+// - Line 5: replaceAll(",", "") and Number(...)
+// - Line 10: console.log(...)
+// - Line 11: console.log(...)
+
+// b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
+// Answer: The error was on the priceAfterOneYear.replaceAll line.
+// It was written as replaceAll("," "") which is invalid syntax (missing a comma between the two arguments).
+// Fixed by writing replaceAll(",", "") so the arguments are the search string "," and the replacement "".
+
+// c) Identify all the lines that are variable reassignment statements
+// Answer:
+// - carPrice = Number(carPrice.replaceAll(",", ""));
+// - priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
+
+// d) Identify all the lines that are variable declarations
+// Answer:
+// - let carPrice = "10,000";
+// - let priceAfterOneYear = "8,543";
+// - const priceDifference = carPrice - priceAfterOneYear;
+// - const percentageChange = (priceDifference / carPrice) * 100;
+
+// e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+// Answer:
+// carPrice.replaceAll(",", "") removes all commas from the string (e.g. "10,000" becomes "10000").
+// Number(...) converts that string into a number (10000) so we can do subtraction and division.
+>>>>>>> Stashed changes