在 Julia 中重塑数组维度 |数组 reshape() 方法

reshape()是 julia 中的一个内置函数，用于返回与指定数组具有相同数据但具有不同指定维度大小的数组。

Syntax:
reshape(A, dims)

Parameters:

• A: Specified array.
• dims: Specified dimension.

Returns: It returns an array with the same data as the specified array, but with different specified dimension sizes.

示例 1：

# Julia program to illustrate 
# the use of Array reshape() method
  
# Getting an array with the same data
# as the specified 1D array, but with
# (2 * 2) dimension sizes.
A = [1, 2, 3, 4];
println(reshape(A, (2, 2)))
  
# Getting an array with the same data
# as the specified 2D array, but with
# (4 * 4) dimension sizes.
B = [1  2  3  4; 5  6  7  8; 9  10  11  12; 13  14  15  16];
println(reshape(B, (4, 4)))
  
# Getting an array with the same data
# as the specified 2D array, but with
# (2 * 8) dimension sizes.
C = [1  5   9  13; 2  6  10  14; 3  7  11  15; 4  8  12  16];
println(reshape(C, 2, :))

输出：

示例 2：

# Julia program to illustrate 
# the use of Array reshape() method
  
# Getting an array with the same data
# as the specified 1D array, but with
# (2 * 2) dimension sizes.
A = ["a", "b", "c", "d"];
println(reshape(A, (2, 2)))
  
# Getting an array with the same data
# as the specified 2D array, but with
# (2 * 2) dimension sizes.
B = ["a" "b"; "c" "d"];
println(reshape(B, (2, 2)))
  
# Getting an array with the same data
# as the specified 3D array, but with
# (2 * 2*3) dimension sizes.
C = cat(["a" "b"; "c" "d"], ["e" "f"; "g" "h"], ["i" "j"; "k" "l"], dims = 3);
println(reshape(C, (2, 2, 3)))

输出：