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: 12, 13, ['I', 'y', 'w', 'a', 'Q', 'f', '2619', 'q', 'e', '8477', 'm', 'C', '203', 'C', '7237', 'h', 'C', 'M']

SOLUTION: 203C

PROBLEM: 2, 3, ['I', '301', '981']

SOLUTION: 981301

PROBLEM: 15, 15, ['N', 'U', '17', '1739', '1917', 'h', '5', 'w', 'P', 'R', '6039', 'g', 'l', 'p', '2457', '5853', '2159']

SOLUTION:
2457