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, 11, ['5203', 'Z', 'L', '6889', '9707', '707', '1999', 'T', 'H', 'p', '2013', 'O', '7451']

SOLUTION: 3102pHT999170770799886LZ3025

PROBLEM: 2, 22, ['43', 'V', '469', '8463', 'E', 'J', 'N', '4049', 'f', '8529', 'R', 'P', 't', '6217', 'v', '8311', 'R', '2055', 'g', '6011', '2567', 'O', 'r', 'K', '8757', 'l', '9205', 'k', '6959']

SOLUTION: O76521106g5502R1138v7126tPR9258f9404NJE3648964V

PROBLEM: 5, 18, ['8031', 'w', '2223', '949', '4425', '7553', '8553', 'K', '7755', '2785', '8261', 'h', '559', '4227', '9195', '5735', '7453', '4559', '1635', '3559', 'X', '9007']

SOLUTION:
95543547537559197224955h162858725577K355835575244

