红宝石 |矩阵行()函数
row()是 Ruby 中的一个内置方法,它返回一个向量,其中包含给定行号中的所有元素。
Syntax: mat1.row(num)
Parameters: The function takes a mandatory parameter row, whose elements are to be returned in a vector.
Return Value: It returns a vector containing all the elements in the num row.
示例 1 :
# Ruby program for row() method in Matrix
# Include matrix
require "matrix"
# Initialize a matrix
mat1 = Matrix[[6, 432], [54, 323]]
# Prints the 0th row
puts mat1.row(0)
输出:
Vector[6, 432]
示例 2 :
# Ruby program for row() method in Matrix
# Include matrix
require "matrix"
# Initialize a matrix
mat1 = Matrix[[1, 1, 1],[2, 2, 2],[3, 5, 6]]
# Prints the 1sr row
puts mat1.row(1)
输出:
Vector[2, 2, 2]