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: 5, 7, ['I', 'R', 'p', '3901', '3837', '9227', '6961']

SOLUTION: 696192273837

PROBLEM: 7, 25, ['4811', 'm', 'H', '471', '9541', 'D', 'k', '4375', 'z', '3377', '2099', 's', 'f', 'J', 'w', '1075', '5925', 'C', 'l', '6841', 'A', '1341', '5339', 'P', '3153', 'D']

SOLUTION: 3153P53391341A6841lC59251075wJfs20993377z4375k

PROBLEM: 18, 18, ['815', 'f', '489', '2249', 'Y', '9247', '6727', 'M', 'P', 'V', '7059', '5247', 'w', '5989', '8411', '9041', '6957', '5927', 'z', 'Z', '7435', 'H', '357']

SOLUTION:
5927