added solutions to 3-manadatory-implement

Author: Alex Jamshidi

Sprint-2/3-mandatory-implement/1-bmi.js

@@ -15,5 +15,5 @@
 // It should return their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
-    // return the BMI of someone based off their weight and height
+    return (weight / (height^2)).toFixed(1)
 }

Sprint-2/3-mandatory-implement/2-cases.js

@@ -14,3 +14,17 @@
 // You will need to come up with an appropriate name for the function
 // Use the MDN string documentation to help you find a solution
 // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+
+function upperSnakeCase(str) {
+    const upperCaseStr = str.toUpperCase();
+    return upperCaseStr.replaceAll(" ","_");
+}
+
+//tests
+console.log(upperSnakeCase("hello world"));
+console.log(upperSnakeCase("hello       world"));
+console.log(upperSnakeCase("h e l l o w o r l d "));
+console.log(upperSnakeCase("   hello world    "));
+console.log(upperSnakeCase("hello 5555 world 6666 "));
+console.log(upperSnakeCase("hello world the quick brown fox jumps over the lazy dog"));
+

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

@@ -4,3 +4,23 @@
 // 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
+
+const penceString = "399p";
+
+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}`
+}
+
+//Tests
+console.log(toPounds("399p"))
+console.log(toPounds("3599p"))
+console.log(toPounds("390p"))
+console.log(toPounds("9p"))
+console.log(toPounds("666399p"))
+console.log(toPounds("30000001p"))
+console.log(toPounds("99p"))
+console.log(toPounds("300p"))