Here is my c++ solution, you can find video here : https://youtu.be/fYcSakw_5-M

vector<int> gradingStudents(vector<int> grades) {
    vector<int> result;
    for(int i = 0; i < grades.size(); i++){
        int mo = grades[i] % 5;
        if(mo < 3 || grades[i] < 38) result.push_back(grades[i]);
        else result.push_back(grades[i] - mo + 5);
    }
    return result;
}

Python solution:

def gradingStudents(grades):

    # Write your code here
round_grades=[]
for i in grades:
    if i<38:
        round_grades.append(i)
    elif (i+(5-i%5))-i < 3:
        x=i+(5-i%5)
        round_grades.append(x)
    else:
        round_grades.append(i)
return round_grades

**java **

public static List gradingStudents(List grades) { // Write your code here for(int i=0;i37){ int num=grades.get(i)%10; int newnum=(grades.get(i)/10)*10; if(num<5 && num>2){ grades.set(i, newnum+5); } if(num>5 && num>7){ grades.set(i, newnum+10); } } } return grades; }

My Solution in JavaScript / TypeScript

function gradingStudents(grades: number[ ]): number[ ] {

return grades.map(x => x < 38 ? x : x % 5 === 3 ? x + 2 : x % 5 === 4 ? x + 1 : x)

}

My solution in Scala:

def gradingStudents(grades: Array[Int]): Array[Int] = { grades.map(number => { if (number < 38) { number } else { val nextMultipleOf5 = ((number / 5) + 1) * 5 if (nextMultipleOf5 - number < 3) nextMultipleOf5 else number }}) }