정렬: 세 수 (백준 10817)

○ 문제
세 정수 A, B, C가 주어진다. 이때, 두 번째로 큰 정수를 출력하는 프로그램을 작성하시오. 

○ 입력
첫째 줄에 세 정수 A, B, C가 공백으로 구분되어 주어진다. (1 ≤ A, B, C ≤ 100)

○ 출력
두 번째로 큰 정수를 출력한다.

○ 예제 입력
20 30 10

○ 예제 출력
20

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import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.IOException;
import java.util.StringTokenizer;
import java.util.Arrays;

public class Main {
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

		StringTokenizer st = new StringTokenizer(br.readLine());
		int[] num = new int[st.countTokens()];
		
		for (int i = 0; i < num.length; i++) {
			num[i] = Integer.parseInt(st.nextToken());
		}
		
		Arrays.sort(num);
		bw.write(String.valueOf(num[num.length - 2]));
		
		bw.flush();
		bw.close();

	}
	
}