TASK 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.
PROBLEM: 15, 16, ['243', '3195', '1763', '1283', '1463', '2655', '7', 'S', 's', '3155', 's', 'D', '7659', 'Q', 'm', '3821', '593', 'D', '5447']

SOLUTION: 3821m

PROBLEM: 1, 2, ['R', 'a']

SOLUTION: aR

PROBLEM: 5, 9, ['z', '8551', '5321', '7653', 't', '3001', 'N', '5891', '1605', 'v', 'O', 'd', '5015', 'D', '159', '351', '9207', '779', '5315', '773', 'o', '5539']

SOLUTION:
16055891N3001t