How do I get the last index of an array?

How do I get the last index of an array?

Approach:

1. Get the ArrayList with elements.
2. Get the first element of ArrayList with use of get(index) method by passing index = 0.
3. Get the last element of ArrayList with use of get(index) method by passing index = size – 1.

What is the last index of an array in Java?

lastIndexOf(Object) method returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element.

How do you print the last element of an array?

// If you want print the last element in the array. int lastNumerOfArray= myIntegerNumbers[9]; Log. i(“MyTag”, lastNumerOfArray + “”); // If you want to print the number of element in the array.

How do you find the last occurrence of a number in an array in Java?

int index = findLastOccurrence(nums, n, target);

1. if (index != -1) {
2. printf(“The last occurrence of element %d is located at index %d”, target, index); }
3. else { printf(“Element not found in the array”); }
4. return 0; }

What is array index in Java?

Java Arrays. Normally, an array is a collection of similar type of elements which has contiguous memory location. Java array is an object which contains elements of a similar data type. Array in Java is index-based, the first element of the array is stored at the 0th index, 2nd element is stored on 1st index and so on.

How do you print one element in an array?

You can access an array element using an expression which contains the name of the array followed by the index of the required element in square brackets. To print it simply pass this method to the println() method.

How do I find the first and last elements of an array?

reset() and end() does exactly this. From the manual: reset() : Returns the value of the first array element, or FALSE if the array is empty. end() : Returns the value of the last element or FALSE for empty array.

How do you find the last occurrence of an element in a list?

Last occurrence of some element in a list in Python

1. Initialize the list.
2. Reverse the list using reverse method.
3. Find the index of the element using index method.
4. The actual index of the element is len(list) – index – 1.
5. Print the final index.

How do I print a list in reverse order?

Reversing a list in-place with the list. reverse() method. Using the “ [::-1] ” list slicing trick to create a reversed copy. Creating a reverse iterator with the reversed() built-in function.

How do I search array in Java?

This is a Java Program to Search Key Elements in an Array. Enter the size of array and then enter all the elements of that array. Now enter the element you want to search for. With the help of for loop we can find out the location of the element easily. Here is the source code of the Java Program to Search Key Elements in an Array.

How to create an ArrayList in Java?

Create one ArrayList of ArrayList myList.

Create two integer variables: arrayListCount to hold the total count of ArrayList and itemCount to hold the total count of strings for each ArrayList.

Ask the user to enter the total number of ArrayList to add.

Ask the user to enter the total elements for each ArrayList.

What is an array index in JavaScript?

Arrays in JavaScript are zero-based. This means that JavaScript starts counting from zero when it indexes an array. In other words, the index value of the first element in the array is “0” and the index value of the second element is “1”, the third element’s index value is “2”, and so on. This is not unusual in computer programming languages.

What is the size of an array in Java?

Java arrays are indexed by int, so an array can’t get larger than 2^31 (there are no unsigned ints). So, the maximum size of an array is 2147483648, which consumes (for a plain int[]) 8589934592 bytes (= 8GB).