백준[JAVA] 2745.진법 변환 - 자바

📖 문제

📃 코드

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static int parseDigit(String N, int digit) {
        int temp = 1;
        int ans = 0;

        for (int i = N.length() - 1; i >= 0; i--) {
            char c = N.charAt(i);

            if ('A' <= c && 'Z' >= c) {
                // B - A = 1, 1 + 10(over Decimal), temp = digit
                ans += (c - 'A' + 10) * temp;
            } else {
                ans += (c - '0') * temp;
            }
            temp *= digit;
        }
        return ans;
    }
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String s[] = br.readLine().split(" ");

        String N = s[0];
        int digit = Integer.parseInt(s[1]);    //digit
        int result = parseDigit(N, digit);

        System.out.println(result);
    }
}

🔗 링크

https://www.acmicpc.net/problem/2745

2745번: 진법 변환