In Java, you can get the first and last elements of an array using the following approaches: 1. Using Array Indexing: To get the first element, you can access it using index 0. To get the last element, you can access it using the index array.length - 1. Here's an example:

Dec 24, 2024 · In Java, to get the last element in an array, we can access the element at the index array.length - 1 using array indexing. The length property of the array provides its total size, and subtracting one from it gives the index of the last element.

Sep 16, 2021 · Given an array of length N and an integer x, you need to find and return the last index of integer x present in the array. Return -1 if it is not present in the array. Last index means - if x is present multiple times in the array, return the index at which x comes last in the array.

Dec 9, 2024 · In Java, to find the index of a specific element in an array, we can iterate through it and checking each element. There are several ways to achieve this, including using loops, utility functions, Arrays.asList() for non-primitive arrays, and Streams.

Sep 29, 2020 · Your code will never work; it will return the result after visiting the first element of your array instead of visiting each element. I would suggest you to do that: public int lastIndexOf(int[] nums, int value) { int index = -1; for (int i = 0; i < nums.length; i++) if (nums[i] == value) index = i; return index; }

Apr 16, 2025 · To calculate the length of the array, we have a predefined method arrayname.length. So, we make use of this method to find the last element. Since indexing of array starts from zero, the last element would be in the index length-1.

May 12, 2024 · Therefore, we can use array [0] to access the first element in array. Moreover, we can determine the index of the last element by subtracting one from the length property: array.length – 1. So next, let’s see an example of how to …

Dec 7, 2023 · Our first approach is one of the easiest ways to find the index of an element in an array. This is by using a for loop. The idea is to iterate over the input array and check the element in each iteration. If the element is found, then we return the current index.

Learn efficient techniques to retrieve the last index of Java arrays, explore array indexing methods, and master practical coding strategies for handling array indices in Java programming.

To get the last element of an array, you refer to the index position equal to the array length minus one. Mistake: Trying to access an index out of bounds. Solution: Always ensure the index is within the range of 0 to (length - 1). Use numbers [0] for the first element and numbers [numbers.length - …