Teacher: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.
Teacher: Now, understand the problem? Solve this instance: 9, 19, ['2139', '6849', 'b', '9459', 'v', 'h', 'i', '7977', 'q', 'Z', '7577', 'P', '9971', 'c', '567', 'J', '693', 'N', 'r']
Student:
qZ7577P9971c567J693Nr