Find first and last element of ArrayList in java
Prerequisite: ArrayList in Java
Given an ArrayList, the task is to get the first and last element of the ArrayList in Java,
Input: ArrayList = [1, 2, 3, 4] Output: First = 1, Last = 4 Input: ArrayList = [12, 23, 34, 45, 57, 67, 89] Output: First = 12, Last = 89
- Get the ArrayList with elements.
- Get the first element of ArrayList with use of get(index) method by passing index = 0.
- Get the last element of ArrayList with use of get(index) method by passing index = size – 1.
Below is the implementation of the above approach:
ArrayList: [1, 2, 3, 4] First : 1, Last : 4
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