获取Julia中的数组维度和维度的大小 - size() 方法

size()是 julia 中的内置函数，用于返回包含指定数组维度的元组。这个返回的元组格式是 (a, b, c) 其中 a 是行，b 是列，c 是数组的高度。

Syntax:
size(A::AbstractArray)
or
size(A::AbstractArray, Dim)

Parameters:

• A: Specified array
• Dim: Specified dimension

Returns: It returns a tuple containing the dimensions of the specified array.

示例 1：

# Julia program to illustrate 
# the use of Array size() method
  
# Finding a tuple containing the dimension of
# the specified 1D array A.
A = [5, 10, 15, 20]
println(size(A))
  
# Finding a tuple containing the dimension of
# the specified 2D array B of size 2*2
B = [5 10; 15 20]
println(size(B))
  
# Finding a tuple containing the dimension of
# the specified 3D array C of size 2*2*2
C = cat([1 2; 3 4], [5 6; 7 8], [9 10; 11 12], dims=3)
println(size(C))

输出：
示例 2：

# Julia program to illustrate 
# the use of Array size() method
     
# Finding a tuple containing the dimension of
# the specified 1D array A.
A = [1, 2, 3];
println(size(A, 3))
     
# Finding a tuple containing the dimension of
# the specified 2D array B of size 3*2
B = [2 4; 6 8; 10 12];
println(size(B, 2))
     
# Finding a tuple containing the dimension of
# the specified 3D array C of size 2*2*4
C = cat([10 15; 20 25], [30 35; 40 45],
        [50 55; 60 65], [70 75; 80 85], dims=3);
println(size(C, 2))

输出：