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Julia length()用法及代码示例


这个length()是 julia 中的一个内置函数,用于返回指定数组中存在的元素数。

用法: length(A::AbstractArray)

参数:

  • A:指定数组

返回值:它返回指定数组中存在的元素数。

范例1:




# Julia program to illustrate 
# the use of Array length() method
   
# Finding the number of elements present in
# the specified 1D array A.
A = [5, 10, 15, 20]
println(length(A))
   
# Finding the number of elements present in
# the specified 2D array B of size 2 * 2
B = [5 10; 15 20]
println(length(B))
   
# Finding the number of elements present in
# 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(length(C))

输出:

范例2:


# Julia program to illustrate 
# the use of Array length() method
    
# Finding the number of elements present in
# the specified 1D array A.
A = [1, 2, 3];
println(length(A))
    
# Finding the number of elements present in
# the specified 2D array B of size 2 * 2
B = [2 4; 6 8; 10 12];
println(length(B))
    
# Finding the number of elements present in
# the specified 3D array C of size 2 * 2*2
C = cat([1 2; 3 4], [5 6; 7 8], 
        [9 10; 11 12], [13 14; 15 16], dims = 4);
println(length(C))

输出:




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注:本文由纯净天空筛选整理自Kanchan_Ray大神的英文原创作品 Get number of elements of array in Julia – length() Method。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。