Question

import java.util.Scanner;
public class SudokuPermuter {
  public static void main(String[] args) {
      Scanner input = new Scanner(System.in);
      System.out.println("Welcome to Sudoku Permuter.\n");

      int [] [] sudoku = new int[] [] {
          { 0, 8, 0, 4, 0, 2, 0, 6, 0 },
          { 0, 3, 4, 0, 0, 0, 9, 1, 0 },
          { 9, 6, 0, 0, 0, 0, 0, 8, 4 },
          { 0, 0, 0, 2, 1, 6, 0, 0, 0 },
          { 2, 0, 0, 0, 0, 9, 6, 0, 0 },
          { 0, 1, 0, 3, 5, 7, 0, 0, 8 },
          { 8, 4, 0, 0, 0, 0, 0, 7, 5 },
          { 0, 2, 6, 0, 0, 0, 1, 3, 0 },
          { 0, 9, 0, 7, 0, 1, 0, 4, 0 }
        }

      for (int row = 0; row < 10; row++) {
          for (int column = 0; column < 10; column++) {
              System.out.print(sudoku[row] [column] + " ");
            }
            System.out.println();
        }
    }
}

我正在尝试输入要打印的数独谜题，并且它表示在最后一行{ 0, 9, 0, 7, 0, 1, 0, 4, 0 }之后预计会有分号

但是当我输入分号时，它将括号作为整个String args方法的结束。我不知道为什么。

Answer 1

第二个右括号后面需要分号（结束赋值语句）：

int [] [] sudoku = new int[] [] {
      { 0, 8, 0, 4, 0, 2, 0, 6, 0 },
      { 0, 3, 4, 0, 0, 0, 9, 1, 0 },
      { 9, 6, 0, 0, 0, 0, 0, 8, 4 },
      { 0, 0, 0, 2, 1, 6, 0, 0, 0 },
      { 2, 0, 0, 0, 0, 9, 6, 0, 0 },
      { 0, 1, 0, 3, 5, 7, 0, 0, 8 },
      { 8, 4, 0, 0, 0, 0, 0, 7, 5 },
      { 0, 2, 6, 0, 0, 0, 1, 3, 0 },
      { 0, 9, 0, 7, 0, 1, 0, 4, 0 }
    } ;

Answer 2

  int [] [] sudoku = new int[] [] {
      { 0, 8, 0, 4, 0, 2, 0, 6, 0 },
      { 0, 3, 4, 0, 0, 0, 9, 1, 0 },
      { 9, 6, 0, 0, 0, 0, 0, 8, 4 },
      { 0, 0, 0, 2, 1, 6, 0, 0, 0 },
      { 2, 0, 0, 0, 0, 9, 6, 0, 0 },
      { 0, 1, 0, 3, 5, 7, 0, 0, 8 },
      { 8, 4, 0, 0, 0, 0, 0, 7, 5 },
      { 0, 2, 6, 0, 0, 0, 1, 3, 0 },
      { 0, 9, 0, 7, 0, 1, 0, 4, 0 }
    };

Answer 3

不需要构造函数。它可以像这样实例化......

    int[][] sudoku = {
  { 0, 8, 0, 4, 0, 2, 0, 6, 0 },
  { 0, 3, 4, 0, 0, 0, 9, 1, 0 },
  { 9, 6, 0, 0, 0, 0, 0, 8, 4 },
  { 0, 0, 0, 2, 1, 6, 0, 0, 0 },
  { 2, 0, 0, 0, 0, 9, 6, 0, 0 },
  { 0, 1, 0, 3, 5, 7, 0, 0, 8 },
  { 8, 4, 0, 0, 0, 0, 0, 7, 5 },
  { 0, 2, 6, 0, 0, 0, 1, 3, 0 },
  { 0, 9, 0, 7, 0, 1, 0, 4, 0 }
} ;

Answer 4

你的数组抛出异常ArrayIndexOutOfBoundsException

你需要让你的阵列更大或将循环更改为9 inested of 10

Answer 5

我认为你应该选择一种更方便的方式代表你的用手填充桌子时的数独：类似于数组的东西稍后拆分的字符串，例如填写更方便在（非常简单）转换之后，你有了你的数组。

（我在这里使用Javascript表示法，转换不应该很难。）

var oneSudokuStrings = [];
var sl=0;
oneSudokuStrings [sl++] = " O 8 0 4 0 2 0 6 0 ";
oneSudokuStrings [sl++] = " 0 3 4 0 0 0 9 1 0 ";
oneSudokuStrings [sl++] = " 9 6 0 0 0 0 0 8 4 ";
oneSudokuStrings [sl++] = " 0 0 0 2 1 6 0 0 0 ";
oneSudokuStrings [sl++] = " 2 0 0 0 0 9 6 0 0 ";
oneSudokuStrings [sl++] = " 0 1 0 3 5 7 0 0 8 ";
oneSudokuStrings [sl++] = " 8 4 0 0 0 0 0 7 5 ";
oneSudokuStrings [sl++] = " 0 2 6 0 0 0 1 3 0 ";
oneSudokuStrings [sl++] = " 0 9 0 7 0 1 0 4 0 ";

var oneSudoku = [];
for (var i=0; i<oneSudokuStrings.length; i++) {
    oneSudoku[i]=oneSudokuStrings[i].match(/[^ ]+/g);
}

硬编码二维数组错误？

5 个答案: