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: 20, 26, ['9693', 'i', '8753', 'f', '9131', 'v', '2831', '1541', 's', '8307', '373', 's', 'z', '4929', 'I', '741', 'K', '7767', '2557', 'f', '887', 'g', '779', 'k', '5967', '4947', '2373', '7251', '8841', '3277']

SOLUTION: 74947695k977g788f

PROBLEM: 9, 11, ['m', 'r', '5241', 'x', 'Q', 'f', '1167', '1869', '4753', 'g', 'y', 'M', '7109', '2177', 'h', 'K', '5481', '9731', 'u', 'K', 'E', 't', '4867', '4539', '7943', 'W']

SOLUTION: yg3574

PROBLEM: 2, 20, ['s', '1801', '5951', '9605', 'U', '71', 'J', 'f', 'u', 'F', 'a', 'q', '1311', 'X', 'Y', 'y', 'G', 'h', '2001', '9593', 'Q', '1177', 'G', '7007', 'M', 'Y']

SOLUTION:
39591002hGyYX1131qaFufJ17U506915951081