Answer 1

The code works with the rows of the array (or sub arrays). It convers every element of the sub-array to string and output element with max length from this row.
So for the first sub array max len is 1 character, for the second one is 2 characters, and for the third one - 4)
First map with x - takes sub-arrays
x.map - taks elements y from sub-array x
y.to_s.size - rerurn length of the element y that was converted to the string, and we output the max len of the element from every sub-array.

Answer 2

length of the elements of the sub-arrays )

map is like foreach ...
the first map takes every sub-array and do second map on every element of the sub-array

Answer 3

sorry for my bad explanation 😂

Answer 4

In html, When i use / for ending code it displays the same results as without / why?plz answer me also

Answer 5

Because you should do test and understand basics first ok first only I also traded challenge but afterwards I understand