import ch02.ex13.OsCpu;
import ch02.ex17.Queue;
import com.opencsv.bean.CsvToBeanBuilder;
import org.junit.Test;
import org.omg.CORBA.IntHolder;
import java.io.FileReader;
import java.io.IOException;
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.util.List;
import java.util.Random;
import java.util.Scanner;
public class Chapter02 {
@Test
public void ex01() {
LocalDate date = LocalDate.now().withDayOfMonth(1);
int month = date.getMonthValue();
System.out.println(" Sun Mon Tue Wed Thu Fri Sat");
DayOfWeek weekday = date.getDayOfWeek();
int value = convertWeek(weekday.getValue());
for (int i = 1; i < value; i++) {
System.out.print(" ");
}
while (date.getMonthValue() == month) {
System.out.printf("%4d", date.getDayOfMonth());
date = date.plusDays(1);
if (convertWeek(date.getDayOfWeek().getValue()) == 1) {
System.out.println();
}
}
}
/**
* ìš”ì¼ ë²ˆí˜¸ë¥¼ 월요ì¼(1)~ì¼ìš”ì¼(7)ì—ì„œ ì¼ìš”ì¼(1)~í† ìš”ì¼(7)으로 변경한다.
*
* @param value ìš”ì¼ ë²ˆí˜¸. 월요ì¼(1) ~ ì¼ìš”ì¼(7)
* @return ìš”ì¼ ë²ˆí˜¸. ì¼ìš”ì¼(1) ~ í† ìš”ì¼(7)
*/
private int convertWeek(int value) {
// 7 -> 1
// 1 -> 2
// 2 -> 3
// 3 -> 4
// 4 -> 5
// 5 -> 6
// 6 -> 7
return value + 1 > 7 ? 1 : value + 1;
}
@Test
public void ex02() {
try (Scanner scanner = new Scanner(System.in);) {
int nextInt = scanner.nextInt();
System.out.println(nextInt);
}
Random r = new Random();
r.nextInt(20);
}
@Test
public void ex04() {
IntHolder ih1 = new IntHolder(10);
IntHolder ih2 = new IntHolder(20);
System.out.println("ih1 = " + ih1.value + ", ih2 = " + ih2.value);
// êµì²´
int temp = ih1.value;
ih1.value = ih2.value;
ih2.value = temp;
System.out.println("ih1 = " + ih1.value + ", ih2 = " + ih2.value);
Integer i1 = new Integer(111);
Integer i2 = new Integer(222);
System.out.println("i1 = " + i1 + ", i2 = " + i2);
Integer t = i1;
i1 = i2;
i2 = t;
System.out.println("i1 = " + i1 + ", i2 = " + i2);
}
@Test
public void ex05() {
ch02.ex05.Point p = new ch02.ex05.Point(3, 4).translate(1, 3).scale(0.5);
System.out.println(p.getX());
System.out.println(p.getY());
}
@Test
public void ex06() {
ch02.ex06.Point p = new ch02.ex06.Point(3, 4).translate(1, 3).scale(0.5);
System.out.println(p.getX());
System.out.println(p.getY());
}
@Test
public void ex10() {
// ch02.ex10.RandomNumbers
// ch02.ex10.MyArrayList
}
@Test
public void ex11() {
// ch02.ex11.Cal
}
@Test
public void ex13() throws IOException {
FileReader reader = new FileReader("docs/ch02/dump.csv");
List