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: 7, 18, ['2347', 'y', 'i', 'G', 'p', '821', 'l', 'K', '2571', '3897', 'I', 'X', 'o', 'w', 'F', 'h', 'o', 'k']

SOLUTION: kohFwoXI38972571Kl

PROBLEM: 2, 4, ['9669', '8783', '8485', 'w', 'U', '4489', '1573', '6015', 'p', '1533', 'X', '3123', 'y', 'X', '4921', 'p', 'K', '9841', '8639', '1953']

SOLUTION: w84858783

PROBLEM: 7, 18, ['m', '6753', '5969', '3097', '6031', '5859', 'P', '9041', 'r', 'd', 'F', 'I', '3743', '2149', 'A', '7809', 'N', '2209', 'S', 'Y']

SOLUTION:
2209N7809A21493743IFdr9041P