single to multi dimension array conversion

[Ashikali Ashikali]

Can any one tell me converting single to multi dimension array
conversion

For example ,
a = [ 1,2,3,4,5,6,7,8,9,10 ]
a.<methodName>( 2,3 )

Output,



here ,
2 means dimension No
3 means elements in each dimension

 

[Ashikali Ashikali]

Can any one tell me converting single to multi dimension array
conversion

For example ,
a = [ 1,2,3,4,5,6,7,8,9,10 ]
a.<methodName>( 2,3 )

Output,



here ,
2 means dimension No
3 means elements in each dimension

In above example output should be ,
a = [ [1,2,3],[4,5,6],[7,8,9] , [ 10 ] ]

 

[James Coglan]

[Note: parts of this message were removed to make it a legal post.]

Can any one tell me converting single to multi dimension array
conversion

For example ,
a = [ 1,2,3,4,5,6,7,8,9,10 ]
a.<methodName>( 2,3 )

Output,



here ,
2 means dimension No
3 means elements in each dimension

In above example output should be ,
a = [ [1,2,3],[4,5,6],[7,8,9] , [ 10 ] ]

That has more than three elements along the outermost direction. It
represents the matrix:

1 2 3
4 5 6
7 8 9
10

So you can't fit the data into a 3x3 space. You might need to specify the
problem a bit more carefully.

 

[James Coglan]

[Note: parts of this message were removed to make it a legal post.]

Can any one tell me converting single to multi dimension array
conversion

For example ,
a = [ 1,2,3,4,5,6,7,8,9,10 ]
a.<methodName>( 2,3 )

Output,



here ,
2 means dimension No
3 means elements in each dimension

In above example output should be ,
a = [ [1,2,3],[4,5,6],[7,8,9] , [ 10 ] ]

That has more than three elements along the outermost direction. It
represents the matrix:

1 2 3
4 5 6
7 8 9
10

Although, here's one possible and slightly more general solution:

class Array
def multidim(*sizes)
split = sizes.inject { |a,b| a * b }
return self unless split
result = []
each_slice(split) { |slice| result << slice.multidim(*sizes[1..-1]) }
result
end
end

With this, you specify how many you want in each dimension, so:

[1,2,3,4,5,6,7,8,9,10].multidim(3)
#=> [[1,2,3],[4,5,6],[7,8,9],[10]]

It works from the outside in, so for higher dimensions it works like this:

[1,2,3,4,5,6,7,8,9,10].multidim(3,2)
#=> [ [ [1, 2],
[3, 4],
[5, 6]
],
[ [7, 8],
[9, 10]
] ]