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: 3, 4, ['2419', '643', '8177', '7291', '561', '6529', '4101', 'u', '6445']

SOLUTION: 19277718

PROBLEM: 22, 27, ['J', '5585', '3627', '1461', 'z', 'r', 'm', '8459', '5831', 'F', 'N', 'O', '1383', 'K', 'S', '3033', 'h', '5351', '2659', 's', 'B', '8067', 'k', '7393', '7027', 'x', 'U', '6565']

SOLUTION: Ux72073937k7608

PROBLEM: 7, 10, ['7787', '8633', '8359', '9319', '6409', '173', '6233', 'Y', '6631', '7655', '583', 'C', 'C', 'l', 'b', '9061', 'n', '2737', '8151', 'I', '4767', 'M', 'I']

SOLUTION:
55671366Y3326