문제
https://www.acmicpc.net/step/1
1. Hello World
public class Main{
public static void main(String[] args){
System.out.print("Hello World!");
}
}
ps. 이거 처음에 어떻게 해야 하는 지 몰라서
"내가 헬로월드도 출력 못하다니 ....!"
하며 좌절했던 문제
2. A+B
import java.util.Scanner;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int a,b;
a= sc.nextInt();
b= sc.nextInt();
int c = a+b ;
System.out.println(c);
}
}
3. A-B
import java.util.Scanner;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int a,b;
a= sc.nextInt();
b= sc.nextInt();
int c= a-b;
System.out.print(c);
}
}
4. A×B
import java.util.Scanner;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int a,b,c;
a= sc.nextInt();
b= sc.nextInt();
c = a*b;
System.out.println(c);
}
}
5. A/B
import java.util.Scanner;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
double a,b,c;
a = sc.nextInt();
b = sc.nextInt();
c= a/b;
System.out.println(c);
}
}
6. 사칙연산
import java.util.Scanner;
public class Main {
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int a,b,c,e,f,g,h,i;
a = sc.nextInt();
b = sc.nextInt();
e= a+b;
f= a-b;
g= a*b;
h= a/b;
i= a%b;
System.out.println(e);
System.out.println(f);
System.out.println(g);
System.out.println(h);
System.out.println(i);
}
}
7. ??!
import java.util.Scanner;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
String a ;
a= sc.next();
if(a.equals(a)) System.out.println(a+"??!");
sc.close();
}
}
8. 1998년생인 내가 태국에서는 2541년생?!
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int a,b;
a = sc.nextInt();
b= a-543;
System.out.println(b);
sc.close();
}
}
9. 나머지
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int a,b,c,d,e,f,g;
a=sc.nextInt();
b=sc.nextInt();
c=sc.nextInt();
d=(a+b)%c;
e=((a%c)+(b%c))%c;
f=(a*b)%c;
g=((a%c)*(b%c))%c;
System.out.println(d);
System.out.println(e);
System.out.println(f);
System.out.println(g);
sc.close();
}
}
10. 곱셈
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int a,b,c,d,e,f,g,h;
a= sc.nextInt();
b= sc.nextInt();
c= b/100;
d= (b-(c*100))/10;
e= (b-(c*100)-(d*10));
f= a*e;
g= a*d;
h= a*c;
System.out.println(f);
System.out.println(g);
System.out.println(h);
System.out.println(a*b);
sc.close();
}
}
11. 꼬마 정민
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
long a,b,c;
a= sc.nextLong();
b= sc.nextLong();
c= sc.nextLong();
System.out.println(a+b+c);
}
}
12. 고양이
public class Main{
public static void main(String[] args){
System.out.println("\\ /\\");
System.out.println(" ) ( ')");
System.out.println("( / )");
System.out.println(" \\(__)|");
}
}
13. 개
public class Main{
public static void main(String[] args){
System.out.println("|\\_/|");
System.out.println("|q p| /}");
System.out.println("( 0 )\"\"\"\\");
System.out.println("|\"^\"` |");
System.out.println("||_/=\\\\__|");
}
}
