Stack lastIndexOf() method in Java with Example
The Java.util.Stack.lastIndexOf(Object element) method is used to check and find the occurrence of a particular element in the Stack. If the element is present in the Stack then the lastIndexOf() method returns the index of last occurrence of the element otherwise it returns -1. This method is used to find the last occurrence of a particular element in a Stack.
Parameters: The parameter element is of type Stack. It refers to the element whose last occurrence is required to be checked.
Return Value: The method returns the position of the last occurrence of the element in the Stack. If the element is not present in the Stack then the method returns -1. The returned value is of integer type.
Below programs illustrate the Java.util.Stack.lastIndexOf() method:
Stack: [Geeks, for, Geeks, 10, 20] Last occurrence of Geeks is at index: 2 Last occurrence of 10 is at index: 3
Stack: [10, 22, 3, 10, 20] Last occurrence of 10 is at index: 3 Last occurrence of 20 is at index: 4