String.lastIndexOf

Easy
9
75.0% Acceptance

In this coding challenge, you will be implementing a function called findLastIndexOf(string, substring) that takes two arguments: a string and a substring. The function should return the index of the last occurrence of the value in the string.

Instructions

  • If no element is found, return -1.

Example test cases

findLastIndexOf('hello world', 'o'); // Output: 7
findLastIndexOf('testing', 't'); // Output: 3
findLastIndexOf('abcdef', 'xyz'); // Output: -1

Hints

  • You can use the built-in method .lastIndexOf() directly on the input array.