HackerRank三个月挑战第二周

Grading Students

Grading Students | HackerRank

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function gradingStudents(grades: number[]): number[] {
    // Write your code here
    return grades.map(grades => {
        if (grades < 38) {
            return grades
        }
        const currentGrades: number = grades
        const nextFive = Math.ceil(grades / 5) * 5
        if (nextFive - currentGrades <3){
            return nextFive
        }
        return currentGrades
    })
}

map方法遍历数组，为其每项执行回调函数，返回新数组