3926122_ac_375ms_2204k.java

北大大牛代码 1240道题的原代码 超级权威

import java.util.*;

public class Main {
	private Scanner in;
	private String[][] sheet;

	public static void main(String[] args) {
		new Main().run();
	}

	private int calc(int i, int j) {
		if (sheet[i][j].charAt(0) != '=') {
			return Integer.parseInt(sheet[i][j]);
		}
		int ret = 0;
		StringTokenizer st = new StringTokenizer(
			sheet[i][j].substring(1), "+");
		while (st.hasMoreTokens()) {
			String pos = st.nextToken();
			int p;
			for (p = 0; p < pos.length(); p++) {
				if (Character.isDigit(pos.charAt(p))) {
					break;
				}
			}
			ret += calc(Integer.parseInt(pos.substring(p)) - 1, 
				getCol(pos.substring(0, p)) - 1);
		}
		sheet[i][j] = Integer.toString(ret);
		return ret;
	}

	private int getCol(String str) {
		if (str.length() == 1) {
			return str.charAt(0) - 'A' + 1;
		}
		if (str.length() == 2) {
			return (str.charAt(0) - 'A' + 1) * 26 + str.charAt(1) - 'A' + 1;
		}
		return (str.charAt(0) - 'A' + 1) * 26 * 26
			+ (str.charAt(1) - 'A' + 1) * 26
			+ str.charAt(2) - 'A' + 1;
	}

	private void run() {
		in = new Scanner(System.in);
		int row, col;
		
		for (int cas = in.nextInt(); cas != 0; cas--) {
			col = in.nextInt();
			row = in.nextInt();
			sheet = new String[row][col];
			for (int i = 0; i < row; i++) {
				for (int j = 0; j < col; j++) {
					sheet[i][j] = in.next();
				}
			}
			for (int i = 0; i < row; i++) {
				for (int j = 0; j < col; j++) {
					try {
						System.out.print(calc(i, j));
					} catch (Exception e) {
						e.printStackTrace();
					}
					System.out.print(
						j != col - 1 ? " " : "\n");
				}
			}
		}
	}
}