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: 10, 11, ['5441', 'k', '9573', '4937', '7305', '2303', 'P', 'P', 'N', '2549', 'C', '5865', 'M', '9033', 'k', 'A']

SOLUTION: C9452

PROBLEM: 4, 4, ['8393', '8873', '6317', 'N', '2549']

SOLUTION: N

PROBLEM: 12, 15, ['z', 'F', 'K', '2799', 'A', '8599', '4909', 'Y', 'Z', '3093', 'B', '4851', '5787', '5541', 'A', '9231', 'X']

SOLUTION:
A145578751584