[softeer] 근무시간, 바이러스 JAVA | scanner, substring, Integer.parseInt, Int scanner.nextInt(),

https://softeer.ai/practice/6254

Softeer - 현대자동차그룹 SW인재확보플랫폼

 

근무시간

import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int total = 0;

        for (int i =0; i<5; i++) {
            String startTime = sc.next();
            String endTime = sc.next();
            
            int startH = Integer.parseInt(startTime.substring(0,2));
            int startMin = Integer.parseInt(startTime.substring(3,5));

            int endH = Integer.parseInt(endTime.substring(0,2));
            int endMin = Integer.parseInt(endTime.substring(3,5));

            total += (60-startMin) + (endH - startH -1 ) * 60 + endMin;
            
        }
        System.out.println(total);
        sc.close();
    }
}

 

 

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https://softeer.ai/practice/6284

Softeer - 현대자동차그룹 SW인재확보플랫폼

 

바이러스

• nextInt()를 사용하여 int 형으로 계산 

(K*P*N) %1000000007 로 계산하였으나 계산에 오류가 있었다. 

import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int K = sc.nextInt();
        int P = sc.nextInt();
        int N = sc.nextInt();

        int result = K;
        for (int i = 1; i<=N; i++){
            result = (result*P)%1000000007;
        }
        System.out.print(result);
        sc.close();
    }
}