Part 1. Definition
In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant string. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.
Part 2. Example
1, 3, ['238', 'h', '92', 'U', '2799']
Answer: 92h238
Explanation: Here, concatenating all the elements between the 1st element and 3rd element in reverse order gives '92h238'.
Part 3. Exercise
3, 18, ['F', 'C', '7149', '1821', 's', 'A', 'N', '7099', '6919', '5757', '9377', '3251', 'r', 'g', 'j', 'n', 'o', 'n', '3467', '5463', '8253', '5555', 't', 'Q', '8243', '9905', '8197', 'F', 'h']
Answer:
nonjgr32519377575769197099NAs18217149