[+] Encapsulate method to find scale

src/utils/gpa-utils.ts

@@ -107,6 +107,16 @@ export class GPAUtils
         return -1;
     }
 
+    /**
+     * Find the scale for a grade
+     *
+     * @param grade Letter grade or numeric grade
+     */
+    public static findScale(grade: string): Scale | undefined
+    {
+        return this.SCALE.find(scale => scale.letter == grade);
+    }
+
     /**
      * Calculate the total-mean (total/max) average
      *