In this Grading Students problem, you need to complete the function gradingStudents that has an integer array as a parameter and need to return the rounding of grades.

HackerRank Grading Students problem solution


Problem solution in Python programming.

#!/bin/python3

import math
import os
import random
import re
import sys

#
# Complete the 'gradingStudents' function below.
#
# The function is expected to return an INTEGER_ARRAY.
# The function accepts INTEGER_ARRAY grades as parameter.
#

def gradingStudents(grades):
    
    for i in range(0,len(grades)):
        
        if grades[i] < 38:
            continue
        else:
            temp = grades[i]
            te = temp % 5
            if te == 3:
                temp = temp + 2
                grades[i] = temp
            elif te == 4:
                temp = temp + 1
                grades[i] = temp
            else:
                continue
    return grades



if __name__ == '__main__':
    fptr = open(os.environ['OUTPUT_PATH'], 'w')

    grades_count = int(input().strip())

    grades = []

    for _ in range(grades_count):
        grades_item = int(input().strip())
        grades.append(grades_item)

    result = gradingStudents(grades)

    fptr.write('\n'.join(map(str, result)))
    fptr.write('\n')

    fptr.close()


Problem solution in Java Programming.

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        for(int a0 = 0; a0 < n; a0++){
            int grade = in.nextInt();
            if (grade >= 38) {
                if (grade%5 >= 3) grade = grade/5*5 + 5;
            }
            System.out.println(grade);
        }
    }
}


Problem solution in C++ programming.

#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <unordered_map>

using namespace std;


int main(){
    int n;
    cin >> n;
    for(int a0 = 0; a0 < n; a0++){
        int grade;
        cin >> grade;
        
        if (grade < 38) {
            cout << grade << "\n";
            continue;
        }
        
        int rem = grade % 5;
        if (5 - rem < 3)
            grade += 5 - rem;
        cout << grade << "\n";
    }
    return 0;
}


Problem solution in C programming.

#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <stdbool.h>

int main(){
    int n; 
    scanf("%d",&n);
    for(int a0 = 0; a0 < n; a0++){
        int grade; 
        scanf("%d",&grade);
        if (grade < 38) {
            fprintf(stdout, "%d\n", grade); // Unchanged
        }
        else if (5 - (grade % 5) < 3) {
            fprintf(stdout, "%d\n", 5*(grade/5 + 1));
        }
        else {
            fprintf(stdout, "%d\n", grade);
        }
    }
    return 0;
}


Problem solution in JavaScript programming.

process.stdin.resume();
process.stdin.setEncoding('ascii');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

process.stdin.on('end', function () {
    input_stdin_array = input_stdin.split("\n");
    main();    
});

function readLine() {
    return input_stdin_array[input_currentline++];
}

/////////////// ignore above this line ////////////////////

function main() {
    var n = parseInt(readLine());
    for(var a0 = 0; a0 < n; a0++){
        var grade = parseInt(readLine());
        var incrementedGrade = grade;
        if(grade < 38){
            console.log(grade);
            continue;
        }
        // increment , if needed, until grade is a multiple of 5
        while(incrementedGrade % 5 != 0){
            incrementedGrade++
        }
        if(incrementedGrade - grade < 3 )
            console.log(incrementedGrade);
        else
            console.log(grade);
            
    }

}