Sheffield | May-2025 | Hassan Osman | Sprint-1

Sprint-1/1-key-exercises/1-count.js

@@ -6,7 +6,7 @@ count = count + 1;
 // Describe what line 3 is doing, in particular focus on what = is doing
 
 /*
- Answer: in line 3, the variable count gets reassigned a new value which is the sum of the old value and 1.
+ Answer: line 3 shows increment operation - the variable count gets reassigned a new value which is the sum of the old value and 1.
 In other words, the variable count is now adding 1 to its old value to obtain a new value.
 */
 

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

@@ -9,13 +9,9 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
 
 /* 
-1. num represents any random whole number (integer) between 1 and 100 (both included)
-2. Math.floor(x) it rounds down x to a value that is less than or equal to x, while Math.random() it generates random 
-   numbers that are equal to 0 and less than 1.
-3. before we multiply (Math.random() by (maximum - minimum + 1) or vice versa, each expression gets evaulated 
-   first on its own. Math.random() leads to an integer between 0 and less 1, while (maximum - minimum + 1)) evaluates 
-   to 100. Then multiplication comes into place and we get floats from 0.00 and less than 100. Having Math.floor()
-   as a method basically means we now have random integers from 0 and 99. By considering the last part of the value
-   assigned to num, we now have random integers from 1 and 100 (both included).
+1. Since Math.random() returns an integer in the interval [0, 1). This means num eventually represents any random integer in the interval [0, 100]. 
+2. Math.floor() rounds down the expression "Math.random() * (maximum - minimum + 1)"", leading to an integer in the interval [0,100).
+
+3. So num returns an integer in the interval [0,100) + 1 which eventually means num return [0, 100]
 4. Done!
 */

Sprint-1/2-mandatory-errors/4.js

@@ -3,5 +3,5 @@
 
 // to avoid the syntax error after running the above lines of code do as below:
 
-const ClockTime12Hour = "20:53";
-const ClockTime24hour = "08:53";
+const clockTime24Hour = "20:53";
+const clockTime12Hour = "08:53";

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

@@ -30,8 +30,7 @@ this problem.
 
 c) line 4 & line 5
 
-d) line 1 & line 2
+d) lines 1, 2, 7 & 8
 
-e) The last expression gets rid of all the commas present in the declared variables in line 1 & 2. or in other words, replaces them commas with
-no space between the characters separated by the commas. 
+e) Firstly, it removes all commas in the string and eventually converts the new string into a number. 
 */

Sprint-1/3-mandatory-interpret/2-time-format.js

@@ -1,4 +1,4 @@
-const movieLength = -10; // length of movie in seconds
+const movieLength = 0; // length of movie in seconds
 
 const remainingSeconds = movieLength % 60;
 const totalMinutes = (movieLength - remainingSeconds) / 60;
@@ -27,10 +27,9 @@ console.log(result);
 
 /*
 a) There are 6 in total.
-b) 0 function calls.
+b) Only one function call "console.log(result)".
 c) it represents the remainder from the division of movieLength by 60.
 d) line 4 represents the total number of mins in the movie (as whole numbers -integers) by getting rid of the decimal parts (in secs).
 e) Result represents the total movie duration (in exact hours, exact min and exact sec). movieDuration could be a good name.
-f) it works. However, if there's enough time to form a whole hour(s) for example the results shows the total mins and total secs and so 
-on. So I'd say it works.
+f) Yes, It does work when trying different values of movieLength.
 */

Sprint-1/4-stretch-explore/chrome.md

@@ -19,4 +19,4 @@ Now try invoking the function `prompt` with a string input of `"What is your nam
 What effect does calling the `prompt` function have?
 //prompt expect input from the user by showing a small window with space for input to be submitted once called.
 What is the return value of `prompt`?
-//undefined
+//a string - the name entered my the user.

Sprint-1/4-stretch-explore/objects.md

@@ -16,7 +16,7 @@ Try also entering `typeof console`
 Answer the following questions:
 
 What does `console` store?
-//console doesn't store. it displays.
+//it stores different logging, debugging, warning/errors and information properties.
 What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
 //console.log log or display values to the console. Console.assert, check if a condition is true and in this case no output. Otherwise, an
 // error message shows. As for the `,`, it's called the dot notation and it's used to access properties and methods of an object.