Interpreted Programme

Author: maryam-devio

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

@@ -1,19 +1,21 @@
-function pad(num) {
-  let numString = num.toString();
-  while (numString.length < 2) {
+function pad(num) {                         //1)num=0, 2)num=0 3) num=1
+  let numString = num.toString(); // (last time)     numString = "1"
+  while (numString.length < 2) {                     //"01" it will return 01      
     numString = "0" + numString;
   }
   return numString;
 }
 
-function formatTimeDisplay(seconds) {
-  const remainingSeconds = seconds % 60;
-  const totalMinutes = (seconds - remainingSeconds) / 60;
-  const remainingMinutes = totalMinutes % 60;
-  const totalHours = (totalMinutes - remainingMinutes) / 60;
+function formatTimeDisplay(seconds) { 
+  const remainingSeconds = seconds % 60; //61%60 = 1
+  const totalMinutes = (seconds - remainingSeconds) / 60; //1-1=0
+  const remainingMinutes = totalMinutes % 60; //0
+  const totalHours = (totalMinutes - remainingMinutes) / 60; // 0
 
-  return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`;
+  return `${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
@@ -22,17 +24,21 @@ function formatTimeDisplay(seconds) {
 
 // a) When formatTimeDisplay is called how many times will pad be called?
 // =============> write your answer here
-
+//3 in console.log
 // 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
-
+//0
 // c) What is the return value of pad is called for the first time?
 // =============> write your answer here
-
+//"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
-
+////1)num=0, 2)num=0 3) num=1, when num is called for last time that is when pad(remainingSeconds),
+//here remainingseconds value = 1 so num is assigned with value of 1
 // 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 pad called for the last time, the value of num is 1 
+//it will convert into string by toString method "1" as its less than 2, it satisfies the while loop condition and,
+// will concatenate with "0" the final value of variable numString would be "01", and will return "01".