instruction:
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.
question:
2, 6, ['415', '3603', 'l', 'C', '9471', 'z', '4087', 'Y', 's']
answer:
z1749Cl3063


question:
5, 13, ['217', '841', 'G', 'N', '5667', '9343', '8067', '7679', 'T', 'Z', 'G', '6499', 'n']
answer:
n9946GZT9767760834397665


question:
14, 18, ['2203', 'F', 'n', '1411', '4079', '9035', '989', 'E', 'q', '75', '4403', '2847', 'g', 'l', 'F', 'T', 'J', 'e', '3065', 'I', '395', '5839', 'J', '9963', 'J', 'i', '3313', '2225', '5203']
answer:

eJTFl


