In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to concatenate all elements of A from the ith element to the jth element, and print the resultant 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.
--------
Question: 6, 12, ['W', '7747', '1915', 'Z', '6841', 'U', '7357', 'B', '5029', 'd', '69', 'E']

Answer: U7357B5029d69E


Question: 4, 4, ['Y', 'f', '3041', 'O', '9579', '1187']

Answer: O


Question: 4, 15, ['735', '3915', 'h', 'g', 'F', 'l', 'g', '8733', 'b', '6443', '8477', 'm', '9929', '7527', 'c', '9929', 'f', 'X', 'm']

Answer:
gFlg8733b64438477m99297527c