Longs.indexOf(long array, long target) method of Guava’s Longs Class accepts two parameters array and target. If the target exists within the array, the method returns the start position of its first occurrence. If the target does not exist within the array, the method returns -1.
public static int indexOf(long array, long target)
Parameters: The method accepts two parameters:
- array: which is the integer array in which the target array is to checked for index.
- target: which is the array to be searched for as a sub-sequence of specified array.
Return Value: The method returns an integer value as follows:
- It returns the start position of first occurrence of the target if the target array exists in the array.
- Else it returns -1 if the target does not exist in the array.
Exceptions: The method does not throw any exception.
Below examples illustrate the implementation of above method:
Array: [1, 2, 3, 4, 3, 5] Target Array: [3, 4, 3] Target is present at index 2
Array: [3, 5, 7, 11, 13] Target Array: [23, 37] Target is not present in the array
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