红宝石 |矩阵 hstack()函数

hstack()是 Ruby 中的一个内置方法，通过将接收器与给定矩阵水平堆叠来返回一个新矩阵。
它需要一个水平堆叠的矩阵。

Syntax: mat1.hstack(mat2)

Parameters: The function needs a matrix which is to be stacked horizontally.

Return Value: It returns resultant matrix after stacking is done.

示例 1 ：

#Ruby program for hstack() method in Matrix
  
#Include matrix
require "matrix"
  
#Initialize a matrix
    mat1
    = Matrix[[ 1, 21 ], [ 31, 18 ]] mat2 = Matrix[[ 4, 6 ], [ 3, 9 ]]
  
#prints the resultant matrix
                                           puts mat1.hstack(mat2)

输出：

Matrix[[1, 21, 4, 6], [31, 18, 3, 9]]

示例 2 ：

#Ruby program for hstack() method in Matrix
  
#Include matrix
require "matrix"
  
#Initialize a matrix
    mat1
    = Matrix[[ 3, 5, 9 ], [ 10, 19, 123 ]] mat2 = Matrix[[ 12, 12 ], [ 19, 18 ]]
  
#prints the resultant matrix
                                                  puts mat1.hstack(mat2)

输出：

Matrix[[3, 5, 9, 12, 12], [10, 19, 123, 19, 18]]