How to wrap a row in a 2D array if the number of elements is greater than a certain number?

Question

JavaScript

It is necessary to display a two-dimensional array with a different number of characters in each line, if the number of characters in a line is more than 20, transfer the remainder to a new line. Let 's say

[
[Hello, me],
[my name is Ivan, Ivanovich, Ivanov]
]

So that the word "Ivanov" is already on a new line.

Answer 1

It does not matter that the array is two-dimensional. In fact, you need to output one array of hyphenated characters. Only it is necessary to solve this problem separately for each row of a two-dimensional array.
The simplest solution is to print '\n' in the character output loop if the current character is the 20th, 40th, etc. For example, you can check (i+1) % 20 == 0.