judgeDifference

function graduation(input) {
//Input
    let studentName = input[0];
    let grade = 0;
    let i = 1;

//Code
    while (i < input.length) {
        grade += Number(input[i]);
        i++;
    }

    let averageGrade = grade / (input.length - 1);

// Output
    if (averageGrade >= 4) {
        console.log(`${studentName} graduated. Average grade: ${averageGrade.toFixed(2)}`);
    } //No else output
}