백준 3단계(for문)

2739번

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));
        
        int N = Integer.parseInt(br.readLine());
        
        for(int i = 1; i < 10; i++) {
            System.out.println(N + " * " + i +  " = " + N*i);
        }
            
    }
}
 

 

 

10950번

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());
        
        for(int i = 0; i < N; i++) {
            
            st = new StringTokenizer(br.readLine(), " ");
            
            int A = Integer.parseInt(st.nextToken());
            int B = Integer.parseInt(st.nextToken());
            sb.append(A+B).append("\n");
        }
        System.out.println(sb);
    
    }
}

 

 

8393번

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));
        
        int N = Integer.parseInt(br.readLine());
        int sum = 0;
        
        for(int i = 1; i <= N; i++) {
            sum += i;
        }
        System.out.println(sum);
    }
}

 

 

15552번

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));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st;
        
        int N = Integer.parseInt(br.readLine());
        
        for(int i = 0; i < N; i++) {
            
            st = new StringTokenizer(br.readLine()," ");
            
            int A = Integer.parseInt(st.nextToken());
            int B = Integer.parseInt(st.nextToken());
            bw.write(A+B + "\n");
        }
        bw.flush();
 
    }
}
 

 

 

2741번

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));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st;
        
        int N = Integer.parseInt(br.readLine());
        
        for(int i = 1; i <= N; i++) {
            bw.write(i + "\n");
        }
        bw.flush();
 
    }
}

 

 

2742번

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));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st;
        
        int N = Integer.parseInt(br.readLine());
        
        for(int i = N; i >= 1; i--) {
            bw.write(i + "\n");
        }
        bw.flush();
    }
}
 

 

 

11021번

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));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st;
        
        int N = Integer.parseInt(br.readLine());
        
        for(int i = 1; i <= N; i++) {
            st = new StringTokenizer(br.readLine(), " ");
            
            int A = Integer.parseInt(st.nextToken());
            int B = Integer.parseInt(st.nextToken());
            int sum = A + B;
            
            bw.write("Case #" + i +  ": " + sum + "\n");
        }
        bw.flush();
        bw.close();
    }
}
 

 

 

11022번

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));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st;
        
        int N = Integer.parseInt(br.readLine());
        
        for(int i = 1; i <= N; i++) {
            st = new StringTokenizer(br.readLine(), " ");
            
            int A = Integer.parseInt(st.nextToken());
            int B = Integer.parseInt(st.nextToken());
            int sum = A + B;
            
            bw.write("Case #" + i +  ": " + A + " + " +  B + " = " + sum + "\n");
        }
        bw.flush();
        bw.close();
    }
}

 

 

2438번

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));
        
        int N = Integer.parseInt(br.readLine());
        
        for(int i = 0; i < N; i++) {
            for(int j = 0; j <= i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }        
    }
}

 

 

2439번

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));
        
        int N = Integer.parseInt(br.readLine());
        
        for(int i = 0; i < N; i++) {
            for(int j = N-1; j > i; j--) {
                System.out.print(" ");
            }
            for(int k = 0; k <= i; k++) {
                System.out.print("*");
            }
            System.out.println();
        }        
    }
}

 

 

10871번

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;
        
        st = new StringTokenizer(br.readLine(), " ");
        
        int N = Integer.parseInt(st.nextToken());
        int num = Integer.parseInt(st.nextToken());
        
        st = new StringTokenizer(br.readLine(), " ");
        int i = 0;
        
        while(st.hasMoreTokens()) {
            int value = Integer.parseInt(st.nextToken());
            if(num > value)
                sb.append(value + " ");
        }
        
        System.out.println(sb);
        
    }
}