Question: Write a method called lastIndexOf that accepts an integer as a parameter and returns the index in the list of the last occurrence of that

Write a method called lastIndexOf that accepts an integer as a parameter and returns the index in the list of the last occurrence of that value, or -1 if the value is not found in the list. For example, if the list stores [1, 18, 2, 7, 18, 39, 18, 40], then the last index of 18 is 6 and the last index of 3 is -1.

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