[BOJ] 11441 합 구하기 (JAVA)

https://www.acmicpc.net/problem/11441

11441번: 합 구하기

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
	
    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        int N = Integer.parseInt(br.readLine());
        int[] sums = new int[N + 1];
        StringTokenizer st = new StringTokenizer(br.readLine(), " ");
        for (int i = 1; i <= N; i++) {
            sums[i] = sums[i - 1] + Integer.parseInt(st.nextToken());
        }

        int M = Integer.parseInt(br.readLine());
        for (int m = 0; m < M; m++) {
            st = new StringTokenizer(br.readLine(), " ");
            int i = Integer.parseInt(st.nextToken()) - 1;
            int j = Integer.parseInt(st.nextToken());
            sb.append(sums[j] - sums[i]).append("\n");
        }

        System.out.print(sb);

    }
	
}