KOSTA]Springベースのクラウドサービス開発者研修コース16日目Stringコース、Calenderコース実習

package kosta.mission4;

import java.util.Scanner;

public class Solution4_1 {
	
	public int solution(String str, char c) {
		int answer = 0;
		
		str = str.toLowerCase();
		c = Character.toLowerCase(c);
		
		for(char x : str.toCharArray()) {
			if(x == c) {
				answer++;
			}
		}
		return answer;
	}

	public static void main(String[] args) {
		Solution4_1 s = new Solution4_1();
		Scanner sc = new Scanner(System.in);
		String str = sc.next();
		char c = sc.next().charAt(0);
		System.out.println(s.solution(str, c));
	}

}

package kosta.mission4;

import java.util.Scanner;

public class Solution4_3 {
	
	public String solution(String str) {
		String answer = "";
		int max = 0;
		int pos;
		
		while((pos=str.indexOf(' ')) != -1) {
			String tmp = str.substring(0, pos);
			//System.out.println(tmp); 
			int len = tmp.length();
			if(len > max) {
				max = len;
				answer = tmp;
			}
			str = str.substring(pos+1);
		}
		
		if(str.length() > max) answer = str;
		
		return answer;
	}

	public static void main(String[] args) {
		Solution4_3 s = new Solution4_3();
		Scanner sc = new Scanner(System.in);
		String str = sc.nextLine();
		
		System.out.println(s.solution(str));
	}

}

package kosta.api;

import java.util.Calendar;
import java.util.Scanner;

public class CalenderMission {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		Calendar gc = Calendar.getInstance();
		int month = sc.nextInt();
		gc.set(2022, month-1, 1);
		int week = gc.get(Calendar.DAY_OF_WEEK); // 1~7
		int day = gc.getActualMaximum(Calendar.DAY_OF_MONTH);
		
		int count = 0;
		
		System.out.println("<2022년 "+month+"월>");
		System.out.println("일\t월\t화\t수\t목\t금\t토");
		for(int i = 1; i < week; i++) {
			System.out.print("\t");
		}
		
		for(int i = 1; i <= day; i++) {
			System.out.print(i+"\t");
			if((week + i -1)%7 == 0) {
				System.out.println();
			}
		}
		
	}
}