java - 在多维数组中设置一个数字等于一个单词

Question

目前正在为Tomasulo's Algorithm. 我试图从multidimensional数组中取出一个数字，将其设置为一个单词。

这是从如下所示的文本文件中读取的：

10

7

0 2 2 1

0 3 3 2

0 4 2 3

2 5 2 4

2 6 3 5

3 7 3 4

前两行被绕过用于其他事情，但之后我希望将每行的第一个数字设置为一个单词，例如'0'to 'add'、'1'to 'sub'、'2'to'mult'和'3'to'div'

我该怎么做？

   int IntQue[][] = new int[10][4];

    Scanner scanInt = new Scanner(file);
    n = 0; // for the number of instructions
    displayCycle = 0; // cycle to be displayed

    if (scanInt.hasNext()) {
        n = scanInt.nextInt(); // number of instructions taken from file
        displayCycle = scanInt.nextInt(); // cycle number taken from file
    }


            for (int i = 0; i < n; i++) {
        for (int j = 0; j < 4; j++) {
            IntQue[i][j] = scanInt.nextInt();
        }
    }

标签： javaarraysmultidimensional-array

Answer 1

我可能会使用 switch 语句来处理这个问题，因为你只处理最多 10 个可能的结果 (0-9)。在每种情况下，我都会将转换后的值存储在一个单独的字符串数组中，该数组可以按文件中的行数进行索引。以下程序应该处理所有事情，包括存储尾随数字：

更新：这个程序实际上与其他提交的程序非常相似，但应该回答整个问题

import java.util.Scanner;
import java.io.File;
import java.io.FileNotFoundException;

public class TomasuloAlgorithimDriver {

    public static void main(String[] args) throws FileNotFoundException {
        File file = new File("C:/PathToFile/File.txt");
        Scanner scanInt = new Scanner(file);
        String line = "";
        int cycle = 0;

        //Initializations are specific to your example
        String[] convertedFirstNums = new String[6];
        int[][] nums = new int[8][3];

        while (scanInt.hasNextLine()) {
            line = scanInt.nextLine();
            cycle++;
            if(cycle > 2) {//Only executes after first two lines are parsed

                //Grab first integer for conversion
                String firstNum = "" + line.toCharArray()[0];
                convertedFirstNums[cycle-3] = switchInteger(Integer.parseInt(firstNum));

                //Parse the rest of the line, ignoring the first integer
                int ind = 0;
                for(char c : line.substring(1).toCharArray()) {
                    switch(c) {
                    case ' ': //Skip all spaces in the line
                        break;
                    default: //Take following integers and saves them to num array
                        String num = "" + c;
                        nums[cycle-1][ind] = Integer.parseInt(num);
                        ind++;
                        break;
                    }
                }

            } else {
                //Pick up first two lines 
                nums[cycle-1][0] = Integer.parseInt(line);
            }
        }

        scanInt.close();

        for(int i=0; i < nums.length; i++) {
            if(i < 2) //Print first two numbers from first two lines
                System.out.printf("%d\n", nums[i][0]);  
            else {
                System.out.print(convertedFirstNums[i-2] + " : ");
                for(int j=0; j < nums[i].length; j++) {
                    System.out.printf("%d ", nums[i][j]);
                }
                System.out.println();
            }
        }

    }

    public static String switchInteger(int i) {
        switch(i) {
        case 0: return "add ";
        case 1: return "sub ";
        case 2: return "mult";
        case 3: return "div ";
        }
        return "err ";
    }
}