$$config title: 백준 문제 모음 keywords: - IT - 백준 - 백준문제풀이 - java $$ # 백준 2557 자바 ```java public class Main { public static void main(String[] args) { System.out.println("Hello World!"); } } ``` --- # 백준 10718 자바 ```java public class Main { public static void main(String[] args) { System.out.println("강한친구 대한육군"); System.out.println("강한친구 대한육군"); } } ``` --- # 백준 10171 자바 ```java public class Main { public static void main(String[] args) { System.out.println("\\ /\\\n" + " ) ( ')\n" + "( / )\n" + " \\(__)|"); } } ``` --- # 백준 10172 자바 ```java public class Main { public static void main(String[] args) { System.out.println("|\\_/|\n" + "|q p| /}\n" + "( 0 )\"\"\"\\\n" + "|\"^\"` |\n" + "||_/=\\\\__|"); } } ``` --- # 백준 1000 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); System.out.println(a+b); } } ``` # 백준 1001 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); System.out.println(a-b); } } ``` --- # 백준 10998번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); System.out.println(a*b); } } ``` --- # 백준 1008번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); System.out.println((double) a/b); } } ``` --- # 백준 10869번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); System.out.println(a+b); System.out.println(a-b); System.out.println(a*b); System.out.println(a/b); System.out.println(a%b); } } ``` --- # 백준 10430번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int A = sc.nextInt(); int B = sc.nextInt(); int C = sc.nextInt(); System.out.println((A + B) % C); System.out.println(((A % C) + (B % C)) % C); System.out.println((A * B) % C); System.out.println(((A % C) * (B % C)) % C); } } ``` --- # 백준 2588번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int A = sc.nextInt(); int B = sc.nextInt(); System.out.println(A * (B % 10)); //3번째 = A*(B의1의자리) System.out.println(A * ((B / 10) % 10));//4번째 = A*(B의10의자리) / B의 10의자리 = ((B/10)%10) System.out.println(A * ((B / 10) / 10)); //5번째 = A*(B의 100의자리) / B의 100의 자리 = ((B/10)/10) System.out.println(A * (B % 10)+((A * ((B / 10) % 10))*10)+((A * ((B / 10) / 10))*100));//6번째 = 3+(4*10)+(5*100) } } ``` --- # 백준 1330번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); if (a > b) { System.out.println(">"); } else if (a < b) { System.out.println("<"); } else if (a == b) { System.out.println("=="); } } } ``` --- # 백준 9488번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); if (a >= 90 && a <= 100){ System.out.println("A"); }else if(a >= 80 && a <= 89){ System.out.println("B"); }else if(a >= 70 && a <= 79){ System.out.println("C"); }else if(a >= 60 && a <= 69){ System.out.println("D"); }else System.out.println("F"); } } ``` --- # 백준 2753번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int year = sc.nextInt(); if ((((year % 4) == 0) && ((year % 100) != 0)) || ((year % 400) == 0)) { System.out.println("1"); } else System.out.println("0"); } } ``` --- # 백준 14681번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int x = sc.nextInt(); int y = sc.nextInt(); if (x > 0 && y > 0) { System.out.println("1"); } else if (x < 0 && y > 0) { System.out.println("2"); } else if (x < 0 && y < 0) { System.out.println("3"); } else if (x > 0 && y < 0) { System.out.println("4"); } } } ``` --- # 백준 2884번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int h = sc.nextInt(); int m = sc.nextInt(); if ((m - 45) < 0) { m = m - 45 + 60; h--; if (h < 0) { h = 23; } }else{ m = m - 45;} System.out.printf("%d %d", h, m); } } ``` --- # 백준 2739번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); for (int i = 1; i < 10; i++) { System.out.printf("%d * %d = %d\n", n, i, n * i); } } } ``` --- # 백준 10950번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int t = sc.nextInt(); for (int i = 1; i <= t; i++) { int a = sc.nextInt(); int b = sc.nextInt(); System.out.println(a + b); } } } ``` --- # 백준 8393번 자바 ``` java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int sumPlus = 0; for (int i = 1; i <= n; i++) { sumPlus += i; } System.out.println(sumPlus); } } ``` --- # 백준 2741번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int sumPlus = 0; for (int i = 1; i <= n; i++) { sumPlus++; System.out.println(sumPlus); } } } ``` --- # 백준 2742번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int sumPlus = n; for (int i = n; i <= n && i > 0; i--) { System.out.println(sumPlus); sumPlus--; } } } ``` --- # 백준 11021번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int t = sc.nextInt(); for (int num = 1; num<=t ;num++ ) { int a = sc.nextInt(); int b = sc.nextInt(); System.out.printf("Case #%d: %d\n", num, a + b); } } } ``` --- # 백준 11022번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int t = sc.nextInt(); for (int num = 1; num<=t ;num++ ) { int a = sc.nextInt(); int b = sc.nextInt(); System.out.printf("Case #%d: %d + %d = %d\n", num, a, b, a+b); } } } ``` --- # 백준 2438번 자바 ```java import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int t = sc.nextInt(); for (int i = 1; i <= t; i++) { for (int j = 1; j <= i; j++) { System.out.print("*"); } System.out.println(""); } } } ``` ---