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: 1, 2, ['E', 'W', '2117']

Answer: EW


Question: 4, 7, ['h', '1133', 'n', 'Y', 'X', 'z', 'l']

Answer: YXzl


Question: 1, 21, ['t', 'E', 'd', '459', '6501', '5545', '9353', '3159', 'f', '2145', 'N', '6217', 'm', 'M', '5925', '1555', '9313', '4891', '3309', '3137', 'X', 'q', 'v']

Answer:
tEd4596501554593533159f2145N6217mM592515559313489133093137X