Java 2d 字符数组
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Java 2d char array
提问by user2817804
Good day everyone, for the past couple of days I have been working on converting a 1D string array to a 2D char array. My 1D array works fine(zero issues) but when I convert to the 2D char array it only prints out the first row. Below is my code. Any feedback is appreciated. Thanks!
大家好，在过去的几天里，我一直致力于将一维字符串数组转换为二维字符数组。我的一维数组工作正常（零问题）但是当我转换为二维字符数组时，它只打印出第一行。下面是我的代码。任何反馈表示赞赏。谢谢！
for(int i = 0; i < array1.length; i++) //prints out array
{
System.out.println("1d " + number[i]); //prints the line from the file
}
final int ROWS = 7;
final int COLS = 5;
char[][] 2darray = new char [ROWS][COLS];
for (int i = 0; i < array.length; i++)
{
2darray[i]= array1[i].toCharArray();
}
for (int row = 0; row < ROWS; row++)
{
for (int col = 0; col < COLS; col++)
{
System.out.print(2darray[row][col]);
}
System.out.println();
}
回答by Bucket
You cannot have variables start with a number in Java. I suggest changing your variables accordingly and trying it out.
在 Java 中不能让变量以数字开头。我建议相应地更改您的变量并尝试一下。
char[][] array2 = new char [ROWS][COLS];
for (int i = 0; i < array.length(); i++)
{
array2[i]= array1[i].toCharArray();
}
for (int row = 0; row < ROWS; row++)
{
for (int col = 0; col < COLS; col++)
{
System.out.print(array2[row][col]);
}
System.out.println();
}
回答by Bucket
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for(int i = 0; i < array1.length; i++) //prints out array
{
// Why did you use number ?
System.out.println("1d " + array1[i]); //prints the line from the file
}
// You don't need these now.
// final int ROWS = 7;
// final int COLS = 5;
// This will initialize 2darray of size as required according to length of array1
char[][] 2darray = new char [array1.length][];
for (int i = 0; i < array1.length; i++) // What is `array`?
{
2darray[i]= array1[i].toCharArray();
}
for (int row = 0; row < 2darray.length; row++) // Use actual size of 2darray row
{
for (int col = 0; col < 2darray[i].length; col++) // use actual size of 2darray column
{
System.out.print(2darray[row][col]);
}
System.out.println();
}
