Java 알고리즘 1주차

백준 

 

2557번

 

www.acmicpc.net/problem/2557

2557번: Hello World

 

 

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10718번

 

www.acmicpc.net/problem/10718

10718번: We love kriii

 

 

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10171

 

www.acmicpc.net/problem/10171

10171번: 고양이

public class Main {

	public static void main(String[] args) {
		
		System.out.println("\\    /\\");
		System.out.println(" )  ( ')");
		System.out.println("(  /  )");
		System.out.println(" \\(__)|");

	}

}

 

 

 

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10172번

 

www.acmicpc.net/problem/10172

10172번: 개

 

package ch2;

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("||_/=\\\\__|");
	}

}

 

 

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10869번

 

www.acmicpc.net/problem/10869

10869번: 사칙연산

 

 

 

 

 

 

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10430 

 

www.acmicpc.net/problem/10430

10430번: 나머지

 

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 );
		//System.out.println(A%B);
				
		
	}

}

 

 

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2588

www.acmicpc.net/problem/2588

2588번: 곱셈

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));
		System.out.println( A*(B%100/10));
		System.out.println( A*(B/100));
		System.out.println( A*B);
				
		
	}

}

 

 

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그 외 

 

문제 : 물건 가격과 지불 금액을 입력받고, 거스름돈에 대해서 5000원, 1000원, 500원, 100원, 10원, 1원을

각각 얼마씩 줘야하는지 계산하기.

 

 

package ch2;

import java.util.Scanner;

public class okane {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		System.out.printf("물품의 가격은 얼마인가요 ? :  %n");
		int price = sc.nextInt();
		
		System.out.printf("주실 돈을 입력하세요 :  %n");
		int money = sc.nextInt();
		int sa = money -price ;  // 거스름돈 
		
		System.out.println("----- 거스름돈 내역 -------");
		System.out.printf("총 거스름 돈 : %d %n", sa );
		while(true)
		{
			if(sa/5000>0)
			{
				System.out.printf("5000원 : %d %n", sa/5000 );
				sa= sa % 5000;
			}
			
			else if (sa/1000>0)
			{
				System.out.printf("1000원 : %d %n", sa/1000 );
				sa= sa % 1000;
			}
			
			else if (sa/500>0)
			{
				System.out.printf("500원 : %d %n", sa/500 );
				sa= sa % 500;
			}
			else if (sa/100>0)
			{
				System.out.printf("100원 : %d %n", sa/100 );
				sa= sa % 100;
			}
			else if (sa/10>0)
			{
				System.out.printf("10원 : %d %n", sa/10 );
				sa= sa % 10;
			}
			else
			{
				System.out.printf("1원 : %d %n", sa/1 );
				System.out.println("---------------------");
				break;
			}
		}

	}

}