feat: implement toPounds function to convert pence strings to pounds format with example usage

Author: CatchingKiyoko

Sprint-2/3-mandatory-implement/3-to-pounds.js

@@ -4,3 +4,16 @@
 // You will need to declare a function called toPounds with an appropriately named parameter.
 
 // You should call this function a number of times to check it works for different inputs
+
+function toPounds(penceString){
+ const penceStringWithoutTrailingP = penceString.substring(0, penceString.length -1);
+ const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+ const pounds = paddedPenceNumberString.substring(0, paddedPenceNumberString.length - 2);
+ const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2).padEnd(2, "0");
+   return `£${pounds}.${pence}p`;
+}
+
+console.log(toPounds("399p"));
+console.log(toPounds("100p"));
+console.log(toPounds("7688p"));
+console.log(toPounds("1p"));