대학생 코딩 과제 대행 java, python, oracle 열여덟 번째

https://open.kakao.com/o/s3aMpbA

이번에는 외국대학굔데 어디학굔지는 모른다.

java의 기초를 요구하는 과제였다.

요구사항은 아래에 문제가 총 3갠데 1번, 2번, 3번 중 

2번 3번만 의뢰했다

실행영상을 찍기 귀찮기도 하고 영상으로 찍을것도 없어서 그냥 코드를 올린다.

class Book {

int id;

String author;

String title;

int noOfPages;

boolean fiction;

public Book(int id, String author, String title, int noOfPages, boolean fiction) {

this.id = id;

this.author = author;

this.title = title;

this.noOfPages = noOfPages;

this.fiction = fiction;

}

@Override

public String toString() {

return "id:" + id + ", Title:" + title + ", Author:" + author +

", No. of pages:" + noOfPages + ", Fiction:"

+ fiction;

}

}

public class BookStore {

public static void main(String[] args) {

Book[] books = new Book[10];

books[0] = new Book(10,"The Red Sari","Javier Moro",102,false);

books[1] = new Book(4,"Neither a Hake Nor a dove","Khurshid M Kasuari",350,true);

books[2] = new Book(1,"Faces and Places Professor","Deepak Nayyar,",311,false);

books[3] = new Book(6,"Indian Parliamentary Diplomacy","Meira Kumar",89,true);

books[4] = new Book(5,"Farishta,","Kapil Isapuari",600,false);

books[5] = new Book(3,"Super Economies","Raghav Bahal",201,true);

books[6] = new Book(2,"China :Confucius in the Shadow","Poonam Surie,",199,false);

books[7] = new Book(7,"My country My Life","L.K.Advani",143,false);

books[8] = new Book(9,"Joseph Anton","Sulman Rushdie",454,true);

books[9] = new Book(8,"A Political Biography","Andy Marino",411,false);

int fiction_cnt = 0;

int non_fiction_cnt =0;

int page_more_200 = 0;

int page_less_200 = 0;

for( int i = 0 ; i<books.length; i++){

System.out.println(books[i].toString());

System.out.println();

if(books[i].fiction == true)

fiction_cnt +=1;

else

non_fiction_cnt +=1;

if(books[i].noOfPages >= 200)

page_more_200 += 1;

if(books[i].noOfPages <= 200)

page_less_200 += 1;

}

System.out.println(page_more_200+" books have number of pages more than 200.");

System.out.println();

System.out.println(page_less_200+" books have number of pages less than 200.");

System.out.println();

System.out.println(fiction_cnt + " books are fiction.");

System.out.println();

System.out.println(non_fiction_cnt + " books are not fiction.");

}

}

public class Students {

private String courseName;

private int numberOfStudents;

private int[] points;

private char[] grades;

private char[] randomGrades;

public Students(String courseName, int numberOfStudents) {

this.courseName = courseName;

this.numberOfStudents = numberOfStudents;

this.grades = new char[numberOfStudents];

}

public void generatePoints(){

this.points = new int[this.numberOfStudents];

for ( int i =0; i<this.numberOfStudents; i++){

this.points[i] = (int)(Math.random()*50) + 50;

}

}

public void calculateGrades(){

for( int i =0; i<this.numberOfStudents; i++){

if (points[i] >=90)

grades[i] = 'A';

else if(points[i] >= 80 & points[i] <90)

grades[i] = 'B';

else if(points[i] >= 70 & points[i] <80)

grades[i] = 'C';

else if(points[i] >= 60 & points[i] <70)

grades[i] = 'D';

else if(points[i] >= 50 & points[i] <60)

grades[i] = 'E';

else if( points[i] < 50)

grades[i] = 'F';

}

// displayGrades();

}

private void displayGrades(){

System.out.println(this.courseName);

for(int i = 0; i<this.numberOfStudents; i++){

System.out.println("Student no.\t"+i+": Grade is\t"+this.grades[i]);

}

}

public void generateRandomGrades(){

this.randomGrades = new char[this.numberOfStudents];

for(int i =0 ; i<this.numberOfStudents; i++){

int random = (int)(Math.random() * 5) + 1;

if(random == 1)

randomGrades[i] = 'A';

else if (random == 2)

randomGrades[i] = 'B';

else if (random == 3)

randomGrades[i] = 'C';

else if (random == 4)

randomGrades[i] = 'D';

else if (random == 5)

randomGrades[i] = 'E';

else if (random == 6)

randomGrades[i] = 'F';

}

}

public void displayGradesDetails(){

String c = "correct";

String nc = "not correct";

int cnt = 0;

for(int i =0; i<this.numberOfStudents; i++){

if(grades[i] == randomGrades[i]){

System.out.println("Student no.\t"+i+": Grade is\t"+this.grades[i]

+" which is "+ c);

}

else{

System.out.println("Student no.\t"+i+": Grade is\t"+this.grades[i]

+" which is "+ nc);

cnt += 1;

}

}

System.out.println("Total "+ cnt+" students are wrongly graded");

}

public static void main(String[] args){

Students is147=new Students("Introduction to Java Programming",24);

is147.generatePoints();

is147.calculateGrades();

is147.generateRandomGrades();

is147.displayGradesDetails();

}

}