Array Difference
EasyArrays10 min4 tests
Implement a difference function that returns elements from the first array that are not present in the second array.
Example
difference([1, 2, 3, 4, 5], [2, 4]); // [1, 3, 5]Hints (2)
- Convert the second array to a Set for efficient lookups.
- Filter the first array, keeping only elements not in the Set.
Topics
- Arrays
Asked at
Amazon · Microsoft
