05. School Grades / Associative Arrays - Lab - Софтуерен университет

Petya0528 2 Точки

05. School Grades / Associative Arrays - Lab

Колеги имам нужда от помощ за задачата School Grades от Associative Arrays - Lab. Вече два дни си блъскам главата и не знам как да продължа с решението.. Judge ми дава 20/100 и уж знам защо, но не знам как да го поправя. Ето условието:

5.School Grades

Write a function that stores students and their grades throughout the year. If a student appears more than once, add the new grades to existing ones. Finally, print the students and their average grades, sorted alphabetically by student name. The input comes as an array of strings.

Note: The average grades must be fixed to the second decimal place.

Example

Input

Output

['Lilly 4 6 6 5',

'Tim 5 6',

'Tammy 2 4 3',

'Tim 6 6']

Lilly: 5.25

Tammy: 3.00

Tim: 5.75

['Steven 3 5 6 4',

'George 4 6',

'Tammy 2 5 3',

'Steven 6 3']

George: 5.00

Steven: 4.50

Tammy: 3.33

Ето и кода ми

Знам само, че проблемът идва от if-else защото не вкарвам map.set(), но ако го вкарам после не мога да сметна крайната оценка. Не знам вече главата ми гръмна.. ще ми е от огромна полза ако някой ми помогне :)

Тагове:

05/03/2023 14:26:25 JavaScript Fundamentals

Axiomatik 2422 Точки

An exploding head is a good sign, keep the pressure up !

;-)

Demo code =>

function schoolGrades(students) {
    let studentList = students.reduce((acc, curr, index) => {
        let [name, ...grades] = curr.split(' ');
        grades = grades.map((g) => Number(g));
        let currentStudent = acc.find((s) => s.name === name);

        if (currentStudent) {
            currentStudent.grades.push(...grades);
        } else {
            currentStudent = {
                name,
                grades,
                average: 0,
            };

            acc.push(currentStudent);
        }

        const totalGrades = currentStudent.grades.reduce((acc, curr) => {
            acc += curr;
            return acc;
        }, 0);

        currentStudent.average = (totalGrades / currentStudent.grades.length).toFixed(2);

        return acc;
    }, []);

    studentList = studentList.sort((a, b) => a.name.localeCompare(b.name));
    studentList.forEach((stu) => console.log(`${stu.name}: ${stu.average}`));
}

05/03/2023 15:39:23

Petya0528 2 Точки

Thank you sooo much for the fast reply and really helpful answer!! Let's keep up the hard work :D

06/03/2023 23:43:30

miopeda 0 Точки

I like this information.

trap the cat

-1

07/03/2023 02:25:02 07/03/2023 03:07:47

HristoVelchovski 1 Точки

Привет колеги,

ето я задачката решена със знания до тема Associative Arrays.

https://pastebin.com/2m05hWwx

Поздрави!

22/07/2024 17:12:46