In 4-mandatory-interpret/time-format.js, filled in answers

Author: TzeMingHo

Sprint-2/4-mandatory-interpret/time-format.js

@@ -1,4 +1,11 @@
+let timesToBeCalled = 0;
+
 function pad(num) {
+  timesToBeCalled += 1;
+  console.log(
+    ` Pad has been called ${timesToBeCalled} times and num is ${num}`
+  );
+  console.log(` The return value will be ${num.toString().padStart(2, "0")}`);
   return num.toString().padStart(2, "0");
 }
 
@@ -11,24 +18,36 @@ 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
+// The pad function will be called 3 times when formatTimeDisplay is called.
+// 1st: for totalHours
+// 2nd: for remainingMinutes
+// 3rd: for remainingSeconds
 
 // Call formatTimeDisplay with an input of 61, now answer the following:
 
 // b) What is the value assigned to num when pad is called for the first time?
 // =============> write your answer here
+// The value assigned to num is 0 when pad is called for the first time because 61 seconds is 0 hours, 1 minute, and 1 second.
 
 // c) What is the return value of pad is called for the first time?
 // =============> write your answer here
+// The return value of pad is "00" in string format because 0 is padded to 2 digits with leading zeros.
 
 // 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
+// The value assigned to num is 1 when pad is called for the last time.
+// It is because the remaining seconds is 1 second after taken 60 seconds for 1 minute.
 
 // e) What is the return value assigned to num when pad is called for the last time in this program?  Explain your answer
 // =============> write your answer here
+// The return value assigned to num is "01" in string format.
+// It is because 1 second is padded to 2 digits with a leading zero.