questions in regarding to pad() answered

Author: zakiaao-tech

Sprint-3/4-mandatory-interpret/time-format.js

@@ -15,24 +15,32 @@ function formatTimeDisplay(seconds) {
   return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`;
 }
 
+console.log(formatTimeDisplay(61));
+
 // You will need to play computer with this example - use the Python Visualiser https://pythontutor.com/visualize.html#mode=edit
 // to help you answer these questions
 
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
 // =============> write your answer here
+//> pad() was called 3 times---> pad(totalHours)---> pad(remainingMinutes)---> pad(remainingSeconds)
 
 // Call formatTimeDisplay with an input of 61, now answer the following:
+// formatTimeDisplay(61);
 
 // b) What is the value assigned to num when pad is called for the first time?
 // =============> write your answer here
+// pad(totalHours)--> totalHours= 0 --> Therefore num = 0
 
 // c) What is the return value of pad when it is called for the first time?
 // =============> write your answer here
+//the first pad() call returns the answer 00, this is because the value is 0, and functions adds a 0 to the beginning of the character to make it two characters long.
 
 // d) What is the value assigned to num when pad is called for the last time in this program?  Explain your answer
 // =============> write your answer here
+// 3 pad calls---> 1)-> pad(0), 2)-> pad(1), 3)-> pad(1)---> this shows the last call pad(remainingSeconds) = remainingSeconds= 1. when we call formatTimeDisplay(61); indicates that there are 61 seconds, after taking away 60 seconds which makes it 1 minute and the remainder is 1 second.
 
 // e) What is the return value of pad when it is called for the last time in this program?  Explain your answer
 // =============> write your answer here
+// when calling formatTimeDisplay(61); we already figured out the last pad() call is pad (remainingSeconds) and know that remainingSeconds is 1. Inside pad the number changes into a string "1" and the function then calculates and checks the length of the string but we wanted 2 characters/digits at least. Hence why the function adds 0 to the beginning which then gives us "01".