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: 3, 6, ['D', 'X', '6211', '6533', '7783', 'G', 'B', 'o', '9871', 'E', '6691', 'F', 'U', '8191', '6569', '8907', '2861', 'h', '4665', 'U', 'J', '1901', 'V', 'd', 'A', 'Z', '9537', '1553']

SOLUTION: G778365336211

PROBLEM: 5, 6, ['9891', '9721', 'q', 'u', '8721', 'l', 'm', 'p']

SOLUTION: l8721

PROBLEM: 6, 14, ['D', '6263', '1509', 'l', '3431', '6353', 'J', '4629', '5829', '9487', 's', '7919', 't', '9889']

SOLUTION:
9889t7919s948758294629J6353