feat: grading

Author: wakidurrahman

src/hackerrank/problem-solving/algorithms-011-020.js

@@ -31,5 +31,26 @@ function timeConversion(s) {
 }
 
 /**
- * 012: grading
+ * 012: HackerLand University has the following grading policy:
+ *
+ * Every student receives a grade  in the inclusive range from 0 to 100.
+ * Any grade less than 40 is a failing grade.
+ *
+ * Sam is a professor at the university and likes to round each student's grade according to these rules:
+ * If the difference between the grade and the next multiple of 5 is less than 3, round grade up to the next multiple of 5.
+ * If the value of grade is less than 38, no rounding occurs as the result will still be a failing grade.
  */
+
+function gradingStudents(grades) {
+  let count = [];
+  for (let i = 0; i < grades.length; i++) {
+    if (grades[i] % 5 == 3 && grades[i] >= 38) {
+      count.push(grades[i] + 2);
+    } else if (grades[i] % 5 == 4 && grades[i] >= 38) {
+      count.push(grades[i] + 1);
+    } else {
+      count.push(grades[i]);
+    }
+  }
+  return count;
+}