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This article introduces the knowledge of "how to express matrix with java". In the operation of actual cases, many people will encounter such a dilemma. Next, let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The number table of m rows and n columns arranged by m × n aij is called m row n column matrix, which is called m × n matrix for short. Recorded as:

Matrix multiplication

The number of columns of the first matrix = the number of rows of the second matrix

To sum up briefly: the number of rows of the product depends on the matrix A, and the number of columns depends on the matrix B.

Take out the sum of each row of data of matrix An and each column of data of matrix B.

Application of Matrix in Java

A matrix is represented in Java: a two-dimensional array = is an array whose elements are one-dimensional arrays.

Int [] [] arr=new int [3] [3]

The length of the above array is 3. 0.

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