school regiser_JS fund_Obj

function schoolRegister(inputArr) {
  let totalStudents = {};

  for (let lineStudent of inputArr) {
    let tokens = lineStudent.split(", ");
    //console.log(tokens);
    let studentName = tokens[0].split(": ")[1];
    // console.log(studentName);
    let currentGrade = tokens[1].split(": ")[1];
    let studentAverScore = tokens[2].split(": ")[1];

    if (studentAverScore > 3) {
      let student = {studentName, studentAverScore };
      if (!totalStudents.hasOwnProperty(currentGrade)) {
        totalStudents[currentGrade] = [];
      }
      totalStudents[currentGrade].push(student);
    }
  }
   let studentsListGrades = Object.keys(totalStudents).sort((a, b) => a-b);



  for( let grade of studentsListGrades ){
  let students = totalStudents[grade];
  console.log(`${ Number(grade) + 1 } Grade`);
  console.log( `List of students: ${ students.map ( element => element.studentName).join(", ") }`);
  let sum = 0;
  for (let index = 0; index < students.length; index++) {
   sum += Number(students[index].studentAverScore);
  }
  let averageSum = (sum/students.length).toFixed(2);
  console.log(`Average annual score from last year: ${averageSum}`);
  console.log(``);
  }


}
schoolRegister([
  "Student name: Mark, Grade: 8, Graduated with an average score: 4.75",
  "Student name: Ethan, Grade: 9, Graduated with an average score: 5.66",
  "Student name: George, Grade: 8, Graduated with an average score: 2.83",
  "Student name: Steven, Grade: 10, Graduated with an average score: 4.20",
  "Student name: Joey, Grade: 9, Graduated with an average score: 4.90",
  "Student name: Angus, Grade: 11, Graduated with an average score: 2.90",
  "Student name: Bob, Grade: 11, Graduated with an average score: 5.15",
  "Student name: Daryl, Grade: 8, Graduated with an average score: 5.95",
  "Student name: Bill, Grade: 9, Graduated with an average score: 6.00",
  "Student name: Philip, Grade: 10, Graduated with an average score: 5.05",
  "Student name: Peter, Grade: 11, Graduated with an average score: 4.88",
  "Student name: Gavin, Grade: 10, Graduated with an average score: 4.00",
]);