백준 5단계 (1차원 배열)

10818번

import java.io.*;
import java.util.*;
 
public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        StringTokenizer st;
        
        int N = Integer.parseInt(br.readLine());
        int arr[] = new int[N];
        
        st = new StringTokenizer(br.readLine(), " ");
            
        for(int i = 0; i < N; i++) {
            arr[i] = Integer.parseInt(st.nextToken());
        }
        
        Arrays.sort(arr);
        
        sb.append(arr[0] + " " + arr[N-1]);;
        
        System.out.println(sb);
    }
}

 

 

2562번

import java.io.*;
import java.util.*;
 
public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        
        int arr[] = new int[9];
        int max = 0;
        
        int cnt = 0;
        for(int i = 0; i < 9; i++) {
            arr[i] = Integer.parseInt(br.readLine());
            if(max < arr[i]) {
                max = arr[i];
                cnt = i+1;
            }
        }
        
        System.out.println(max);
        System.out.println(cnt);
    }
}

 

 

2577번

import java.io.*;
import java.util.*;
 
public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        
        int arr[] = new int[10];
        
        int A = Integer.parseInt(br.readLine());
        int B = Integer.parseInt(br.readLine());
        int C = Integer.parseInt(br.readLine());
        
        int mul = A * B * C;
        
        while(mul > 0) {
            arr[mul % 10]++; 
            mul /= 10;
        }
        
        for(int i = 0; i < 10; i++) {
            sb.append(arr[i] + "\n");
        }
        
        System.out.println(sb);
    }
}

 

 

3052번

import java.io.*;
import java.util.*;
 
public class Main{
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        
        int arr[] = new int[10];
        int cnt = 1;
        
        for(int i = 0; i < 10; i++) {
            arr[i] = Integer.parseInt(br.readLine()) % 42;
        }
        
        Arrays.sort(arr);
        
        for(int i = 0; i < 9; i++) {
            if(arr[i] != arr[i+1])
                cnt++;
        }
        
        System.out.println(cnt);
    }
}
 

 

 

1546번

import java.io.*;
import java.util.*;
 
public class Main{
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        StringTokenizer st;
        
        int N = Integer.parseInt(br.readLine());
        
        double arr[] = new double[N];
        double result = 0;
        
        st = new StringTokenizer(br.readLine(), " ");
        
        for(int i = 0; i < N; i++) {
            arr[i] = Double.parseDouble(st.nextToken());
        }
        
        Arrays.sort(arr);
 
        for(int i = 0; i < N; i++) {
            result += arr[i] / arr[N-1] * 100 / N;
        }
        
        System.out.println(result);
    }
}
 

 

 

8958번

import java.io.*;
import java.util.*;
 
public class Main{
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        
        int N = Integer.parseInt(br.readLine());
        
        String arr[] = new String[N];
        
        for(int i = 0; i < N; i++) {
            arr[i] = br.readLine();
        }
        
        for(int i = 0; i < N; i++) {
            int cnt = 0;
            int result = 0;
            
            for(int j = 0; j < arr[i].length(); j++) {
                if(arr[i].charAt(j) == 'O') {
                    cnt++;
                }
                else {
                    cnt = 0;
                }
                result += cnt;
            }
            sb.append(result + "\n");
        }
        
        System.out.println(sb);
    }
}
 

 

 

4344번

package baekjoon;
 
import java.io.*;
import java.util.*;
 
public class _2557 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        StringTokenizer st;
        
        int arr[] = new int[1000];
        
        int N = Integer.parseInt(br.readLine());
        
        for(int i = 0; i < N; i++) {
            
            st = new StringTokenizer(br.readLine()," ");
            int num = Integer.parseInt(st.nextToken());
            
            double avg = 0;
            int sum = 0;
            int cnt = 0;
            
            for(int j = 0; j < num; j++) {
                arr[j] = Integer.parseInt(st.nextToken());
                sum += arr[j];
            }
            
            avg = sum / num;
            
            for(int k = 0; k < num; k++) {
                if(arr[k] > avg)
                    cnt++;
            }
            
            String result = String.format("%.3f", (double)cnt / num * 100);
            sb.append(result).append("%" + "\n");
        }
        System.out.println(sb);
    }
}