Quiz 추가.

src/main/java/kr/co/swh/lecture/opensource/jsoup/news/Calendar유용한 함수

@@ -0,0 +1,70 @@
+Quiz. 20160101와 20160103을 입력하면
+20160101
+20160102
+20160103
+을 출력하는 코드를 작성하세요.
+
+//	입력한 달이 몇일까지 있는지를 계산
+public static int endDayFromTotalDay(int year, int month){
+		int lastday;
+		switch (month) {
+		case 2:
+			lastday = 28;
+			if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0)
+				lastday = 29;
+			else
+				lastday = 28;
+			break;
+		case 4:
+		case 6:
+		case 9:
+		case 11:
+			lastday = 30;
+			break;
+		default:
+			lastday = 31;
+		}
+		return lastday;
+}
+
+//	입력한 날짜의 총 날 수를 계산(기준은 1970.1.1부터)
+public static int totalDayFromCalendar(int year, int month, int day){
+		int totaldays;
+		totaldays = 365 * (year - 1);
+		for (int i = 1; i < year; i++) {
+			if (i % 4 == 0 && i % 100 != 0 || i % 400 == 0)
+				totaldays++;
+		}
+		// totaldays = 365 * (year-1) + (year-1)/4 - (year-1)/100 + (year-1)/400
+		int premonth = month - 1;
+		if (premonth >= 1)
+			totaldays += 31;
+		if (premonth >= 2)
+			totaldays += 28;
+		if (premonth >= 3)
+			totaldays += 31;
+		if (premonth >= 4)
+			totaldays += 30;
+		if (premonth >= 5)
+			totaldays += 31;
+		if (premonth >= 6)
+			totaldays += 30;
+		if (premonth >= 7)
+			totaldays += 31;
+		if (premonth >= 8)
+			totaldays += 31;
+		if (premonth >= 9)
+			totaldays += 30;
+		if (premonth >= 10)
+			totaldays += 31;
+		if (premonth >= 11)
+			totaldays += 30;
+		if (month > 2 && (year % 4 == 0 && year % 100 != 0 || year % 400 == 0))
+			totaldays++;
+		totaldays++;
+
+//		int day = totaldays % 7;
+		
+		totaldays = totaldays + day;
+		return totaldays;
+}

src/main/java/kr/co/swh/lecture/opensource/jsoup/news/NaverNewsCrawlSource.java

@@ -90,7 +90,9 @@ public class NaverNewsCrawlSource
 	public static void main(String[] args) {
 		
 		NaverNewsCrawlSource source = new NaverNewsCrawlSource();
-		source.init();
+//		source.init();
+		System.out.println(NaverCrawlManager.totalDayFromCalendar(2019,10,20));
+		System.out.println(NaverCrawlManager.endDayFromTotalDay(2019,10));
 	}
 	
 	class NaverCrawlManager extends A_CrawlClient{