如何在 Java 中获取二维数组的行数和列数？
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How to get rows and columns count of a 2D array in Java?
提问by Aishwarya R
For an array in Java, we can get the lengthof the array with array_name.length. Similarly, how would one get the number of rows and columns of a 2Darray?
对于 Java 中的数组，我们可以length使用array_name.length. 同样，如何获得二维数组的行数和列数？
采纳答案by Idos
Well you probably want array_name.lengthfor getting the count of the rows and array_name[0].lengthfor the columns. That is, if you defined your array like so:
好吧，您可能想要array_name.length获取行数和array_name[0].length列数。也就是说，如果您像这样定义数组：
T[][] array_name = new T[row][col];
array_name.length // row
array_name[0].length // col
