coverts string to UPPER_SNAKE_CASE, 2 options

Author: remimarcelle

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

@@ -14,3 +14,42 @@
 // 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
+
+// Declare a function called toUpperSnakeCase with named parameter inputString
+
+function toUpperSnakeCase(inputString) {
+    // Convert the input string to uppercase
+    const upperCaseString = inputString.toUpperCase();
+    // Replace spaces with underscores
+    const snakeCaseString = upperCaseString.replace(/ /g, '_');
+    return snakeCaseString;
+}
+
+// Call the function with different inputs to check it works
+console.log(toUpperSnakeCase("hello there")); // Output: "HELLO_THERE"
+console.log(toUpperSnakeCase("lord of the rings")); // Output: "LORD_OF_THE_RINGS"
+console.log(toUpperSnakeCase("javascript is fun")); // Output: "JAVASCRIPT_IS_FUN"
+console.log(toUpperSnakeCase("test case")); // Output: "TEST_CASE"
+console.log(toUpperSnakeCase("multiple words here")); // Output: "MULTIPLE_WORDS_HERE"
+
+//can also test with edge cases
+console.log(toUpperSnakeCase("")); // Output: ""
+console.log(toUpperSnakeCase("singleword")); // Output: "SINGLEWORD"
+console.log(toUpperSnakeCase("   leading and trailing spaces   ")); // Output: "___LEADING_AND_TRAILING_SPACES___"  
+
+// Alternative solution using replaceAll method
+function toUpperSnakeCase(str) {
+  return str.toUpperCase().replaceAll(" ", "_");
+}
+
+// Differences between the two methods:
+// 1. The first method uses a regular expression with the replace method
+//  to replace all spaces, while the second method uses the replaceAll 
+// method which is more straightforward for this specific case.
+// Regex is a more complex tool that can be used for more advanced
+// string manipulation and "replaces all matches globally", while the 
+// replaceAll methods is simpler and more efficient for replacing all 
+// occurrences of a specific substring.
+// 2. The replaceAll method is a newer addition to JavaScript and may 
+// not be supported in older environments, while the replace method 
+// with a regular expression is widely supported.