Help with "Kolgomorov Complexity"

I was tasked with the following and can't really solve it:

1) Design a code that can generate the string: 'abcabcabcabcabcabcabcabcabcabcabcabcd'. --> I know there is a repmat function but how can I use it for char strings? Also, would a for loop help in this case, especially with the additional "letter d" at the end?

2) Design a second code that is even shorter than the first code.

Answer 1

[Walter Roberson]

Hint:

repmat('pqrst', 1, 5)