Implementing Sparse Vector in Java

Replacing Element in Java Vector

Last Updated : 11 Dec, 2020

To replace an element in Java Vector, set() method of java.util.Vector class can be used. The set() method takes two parameters-the indexes of the element which has to be replaced and the new element. The index of a Vector is zero-based. So, to replace the first element, 0 should be the index passed as parameter.

Declaration:

 public Object set(int index, Object element)

Return Value:

The element which is at the specified index

Exception Throws:

IndexOutOfBoundsException 
when the index is out of range 
i.e, index < 0 or index >= size()

Implementation:

Java

// Replacing Element in Java Vector
import java.util.Vector;
public class Sias {
    public static void main(String args[])
    {
        try {

            // create a instance vector
            Vector<Integer> vector = new Vector<>();

            // insert the values in vector
            vector.add(1);
            vector.add(2);
            vector.add(3);
            vector.add(4);
            vector.add(5);

            // display the vector
            System.out.println("original vector : "
                               + vector);

            // call set() and replace 2 index value
            vector.set(2, 10);

            // display vector after replacing value
            System.out.println("after replace the value : "
                               + vector);
            // call set() and replace 9th index value
            // which is exception as arrayoutofbound
            vector.set(9, 91);

            // display vector after replacing value
            System.out.println("after replace the value : "
                               + vector);
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

Output

original vector : [1, 2, 3, 4, 5]
after replace the value : [1, 2, 10, 4, 5]
java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 9

Time Complexity: O(n), where n is the length of the vector

Implementing Sparse Vector in Java

mukulsomukesh

Improve

Article Tags :

Practice Tags :

Java

Similar Reads

Implementing Sorted Vector in Java

Vector is a class that implements the List interface. It is a type of dynamic array that means the size of a vector can be grown or shrink during the execution of the program. The initial size of the vector is 10 and if we insert more than 10 elements then the size of the vector is increased by 100%

Implementing Sparse Vector in Java

A vector or arraylist is a one-dimensional array of elements. The elements of a Sparse Vector have mostly zero values. It is inefficient to use a one-dimensional array to store a sparse vector. It is also inefficient to add elements whose values are zero in forming sums of sparse vectors. We convert

Java Program to Search an Element in Vector

A vector in Java is a dynamic array that can be resized as needed. It is synchronized, which means it is safe in multi-threaded programs. To find an element in a Vector we have to loop through its elements to find a match. In this article, we will learn how to search for a component in a Vector usin

Searching Elements in Vector Using Index in Java

Vector implements a dynamic array that means it can grow or shrink as required. Like an array, it contains components that can be accessed using an integer index. An element of a Vector can be searched using an index with different methods. Suppose if the element is not present in the Vector then th

Iterate Over Vector Elements in Java

Vector is like the dynamic array which can grow or shrink its size. Unlike array, we can store n-number of elements in it as there is no size limit. We can iterate over vector by the following ways: Simple for-loopEnhanced for-loopIteratorsEnumeration interface Method 1: Simple for-loop The idea is

Finding Minimum Element of Java Vector

Vector implements a dynamic array that means it can grow or shrink as required. Like an array, it contains components that can be accessed using an integer index. We know two ways for declaring array i.e. either with a fixed size of array or size enter as per the demand of the user according to whic

Finding Maximum Element of Java Vector

Vector implements a dynamic array that means it can grow or shrink as required. Like an array, it contains components that can be accessed using an integer index. We know two ways for declaring array i.e. either with a fixed size of array or size enter as per the demand of the user according to whic

How to Replace a Element in Java ArrayList?

To replace an element in Java ArrayList, set() method of java.util. An ArrayList class can be used. The set() method takes two parameters the indexes of the element that has to be replaced and the new element. The index of an ArrayList is zero-based. So, to replace the first element, 0 should be the

Java Program to Replace an Element in a List

List in Java provides a way to store the ordered collection. The list Interface provides various methods to add, delete, or replace items in the List. In this article, we will learn about how we could replace an element in the list in Java. Methods to Replace an Element in a ListThere are 3 ways to

Java Program to Shuffle Vector Elements

Vectors basically fall in legacy classes but now it is fully compatible with collections. Java has many built-in functions to perform different operations on collections or other data types and one of them is shuffle. To shuffle Vector elements Collections.shuffle() method is used. It shuffle method