TASK DEFINITION: In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.
PROBLEM: 1, 2, ['8165', 'R', 'y', '9865', 'z', 'Z', '9719', '7485', '4049', 'm', 'V', '67', '6101', '5057', 'g', 'l', '6809', '1983', '1091', 'u', '9835']

SOLUTION: R5618

PROBLEM: 1, 3, ['9937', 'F', 'g', 'B', 'M', 'x', 'n', 'V', '4241', 'Z']

SOLUTION: gF7399

PROBLEM: 3, 5, ['1911', '6535', 'k', 'd', '6313', '2587', 'H', 's', '4947', '4507']

SOLUTION:
3136dk