백준 TEST06_1차원 배열 사용하기



필요한 패키지 및 외부 클래스

package test_java;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

단어의개수

class TEST06_01 {
	public TEST06_01() throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
		String n = br.readLine();
		int count=1;
		for(int i=0;i<n.length();i++){
			char chrInput = n.charAt(i);

			if(n.charAt(i) ==' '){
				count++;
				}

			if (chrInput < 0x61 && chrInput > 0x7A) { break; }
			    // 영문(소문자)가 아닐경우 무한 반복!
			else if (chrInput < 0x41 && chrInput > 0x5A) { break; }
                // 영문(대문자)가 아닐 경우 무한 반복!
		}// for end

		//count++;
		if(n.charAt(0)==' ' && n.charAt(n.length()-1)==' '){
			count--;
			count--;
		}
		else if(n.charAt(0)==' ' || n.charAt(n.length()-1)==' '){
			count--;
		}

		bw.write(count+"\n");
		bw.flush();
		bw.close();
	}
}

숫자의 개수

class TEST06_02{
	public TEST06_02() throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
		int[] num = new int[10];
		int A = Integer.parseInt(br.readLine());
		int B = Integer.parseInt(br.readLine());
		int C = Integer.parseInt(br.readLine());

		//bw.write( A * B * C +"\n");

		String sum = A * B * C +"";

		//bw.write(sum);
		char[] a = sum.toCharArray();

		for(int i=0;i<a.length;i++){
			switch(a[i]){
			case '0' : num[0]++;
			break;
			case '1' : num[1]++;
			break;
			case '2' : num[2]++;
			break;
			case '3' : num[3]++;
			break;
			case '4' : num[4]++;
			break;
			case '5' : num[5]++;
			break;
			case '6' : num[6]++;
			break;
			case '7' : num[7]++;
			break;
			case '8' : num[8]++;
			break;
			case '9' : num[9]++;
			break;
			}
		}

		for(int i=0;i<10;i++){
		bw.write(num[i]+"\n");
		}
		bw.flush();
		bw.close();
	}
}

OX퀴즈

class TEST06_03{
	public TEST06_03() throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

		int t_case = Integer.parseInt(br.readLine());
		int[] num = new int[t_case];
		String[] ox = new String[t_case];
		// O- 0x4F X-0x58

	while(true){
		int i = 0;
		for(i=0;i<t_case;i++){
			int j = 0;
			ox[i] = br.readLine();
			char[] chrInput= ox[i].toCharArray();
			if(ox[i].length() > 80 || ox[i].length() < 0){
				break; //MAIN FOR BREAK
			}
			for(j=0;j<ox[i].length();j++){
				if(chrInput[j] == 'O' ||chrInput[j] == 'X') continue;
				else break;	//SUB FOR BREAK
			}
			if(j!=ox[i].length()) break; //MAIN FOR BREAK
		}
		if(i==t_case) break; //O혹은 X가 아닐경우 처음 부터 다시
		}//while end

	for(int i=0;i<t_case;i++){
		char[] sub = ox[i].toCharArray();

		int score = 0;
		for(int j=0;j<ox[i].length();j++){
			if(sub[j] == 'O'){
				score++;
				num[i] += score;
			}
			else
				score = 0;
		}// for - j end

		bw.write(num[i] + "\n");
	}//for - i end

	bw.flush();
	bw.close();

	}
}

음계

class TEST06_04{
	public TEST06_04() throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

		String[] m = br.readLine().split(" ");
		String[] x = new String[8];
		String[] y = new String[8];
		int count = 0 ;

		for(int i=0;i<m.length;i++){
			x[i] = String.valueOf(i+1);
			y[i] = String.valueOf(8-i);
			if(x[i].equals(m[i])){
				count++;
			}

			if(y[i].equals(m[i])){
				count--;
			}
		}

	//	bw.write(m.length+"\n");
	//	bw.write(x[3]+"\n");

		if(m[0].equals("1") && count == 8){
			bw.write("ascending");
		}
		else if(m[0].equals("8") && count == -8){
			bw.write("descending");
		}
		else{
			bw.write("mixed");
		}
		bw.flush();
		bw.close();
	}
}

평균 점수

class TEST06_05{
	public TEST06_05() throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

		int sum = 0;

		while(true){
			int i=0;
			for(i=0;i<5;i++){
				int n = Integer.parseInt(br.readLine());

				if(n<0 || n%5!=0){ break; }

				if(n<40) n=40;

				sum += n;
			}//main for end

			if(i==5){ break; }
		}//while end

		bw.write(sum/5 +"\n");

		bw.flush();
		bw.close();
	}
}

Main

public class TEST06 {
	public static void main(String[] args) throws IOException{
	//	TEST06_01 test06_01 = new TEST06_01();
	//	TEST06_02 test06_02 = new TEST06_02();
	//	TEST06_03 test06_03 = new TEST06_03();
	//	TEST06_04 test06_04 = new TEST06_04();
		TEST06_05 test06_05 = new TEST06_05();
	}
}