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: 4, 9, ['w', 'X', 'I', 't', '6513', 'l', '2163', 'k', 'z']

SOLUTION: zk2163l6513t

PROBLEM: 13, 17, ['y', '9627', '2851', 'E', 'l', '2411', 'c', 'v', 'K', 'r', 'R', 'p', '3147', 'A', '3531', '3473', 'u', '929', '2245', 'S', 'u', '9351', 'P']

SOLUTION: u34733531A3147

PROBLEM: 12, 16, ['4089', 's', 'x', 'Q', 'z', 'g', 'R', '2777', '7255', 'W', '4997', 'e', '4465', 'a', '8807', '291', 'f', '7823', 'j']

SOLUTION:
2918807a4465e