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: 4, 9, ['6451', '9261', 's', '5587', 'D', '7595', 'D', 'E', 's', '8841', 'Y']

SOLUTION: sED5957D7855

PROBLEM: 1, 12, ['2851', 'v', '8871', 'Z', '2227', 'm', 'z', 'B', 'v', '765', '1435', 'V', 'X', 'k', '5955', '2549']

SOLUTION: V5341567vBzm7222Z1788v1582

PROBLEM: 2, 14, ['1957', 'S', 'w', '5587', '97', 'S', 'g', 'K', '2821', '7385', '4567', '3817', 'k', '399', '8179', 'D', '8365', '5715', '6179', '9533', 'r', 'L', 'X', '2031']

SOLUTION:
993k7183765458371282KgS797855wS

