Question: 4. insertBefore(key, data): insert a new element data before the first occurrence of key. Example: List: 467259 insertBefore(2, 3) List: 4673259 insertBefore(1, 8) IndexOutOfBoundsException List:

4. insertBefore(key, data): insert a new element data before the first occurrence of key. Example: List: 467259 insertBefore(2, 3) List: 4673259 insertBefore(1, 8) IndexOutOfBoundsException List: 4673259
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