docs: explanation how is iterating both functions when they are invoke, one is to separate hours, minutes and seconds and the pad() is formatting the time displayed

Author: Grajales-K

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

@@ -3,32 +3,46 @@ function pad(num) {
 }
 
 function formatTimeDisplay(seconds) {
-  const remainingSeconds = seconds % 60;
+  const remainingSeconds = seconds % 60; 
+  //get the remaining seconds after dividing by 61/60 = 1 remainder 1
   const totalMinutes = (seconds - remainingSeconds) / 60;
+  //get seconds = 1 - 60; result is 60/60 =  total minutes 1
   const remainingMinutes = totalMinutes % 60;
+  //the remainingMinutes  = 1 & 60 = 1; because the totalMinutes is less than 
+  // 60 the number will always the number from left side of the modulus operator
   const totalHours = (totalMinutes - remainingMinutes) / 60;
 
   return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`;
 }
 
+
+console.log(formatTimeDisplay(61)); // Should print "00:01:01"    
+
 // 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 function will be called 3 times when formatTimeDisplay is called.
 
-// Call formatTimeDisplay with an input of 61, now answer the following:
+//==== 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
+// =============> write your answer here 
+// The value assigned to num when pad is called for the first time is 0.
 
 // c) What is the return value of pad is called for the first time?
 // =============> write your answer here
+// The return value of pad when it is called for the first time is "00".
+// because num is 0, and when we convert it to a string and pad it to 2 
+// characters with leading zeros, it becomes "00".
 
 // 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 when pad is called for the last time in this program is 1
 
 // 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 when pad is called for the last time in this program is "01".