Write an algorithm that returns the index of the last occurrence of the key value in the sequence s1,..., sn. If the key is not in the sequence, the algorithm returns the value 0. Example: If the...

Write an algorithm that returns the index of the last occurrence of the key value in the sequence s1,..., sn. If the key is not in the sequence, the algorithm returns the value 0. Example: If the sequence is: 12, 11, 12, 23 and the key is 12, the algorithm returns the value 3