comments answered and files fixed

Author: bartoszkawiak

practice-tdd/get-ordinal-number.js

@@ -15,4 +15,5 @@ export function getOrdinalNumber(num) {
   } else if (strNum.endsWith("3")) {
     return strNum + "rd";
   }
+  return strNum + "th";
 }

practice-tdd/repeat-str.js

@@ -1,4 +1,7 @@
 export function repeatStr(str, count) {
+  if (count < 0) {
+    throw new Error("Count cannot be negative");
+  }
   let result = "";
   for (let i = 0; i < count; i++) {
     result += str;