Operations on an Array in Data Structures

Here we will see some basic operations of array data structure. These operations are −

• Traverse
• Insertion
• Deletion
• Search
• Update

The traverse is scanning all elements of an array. The insert operation is adding some elements at given position in an array, delete is deleting element from an array and update the respective positions of other elements after deleting. The searching is to find some element that is present in an array, and update is updating the value of element at given position. Let us see one C++ example code to get better idea.

Example

 Live Demo

#include<iostream>
#include<vector>
using namespace std;
main(){
   vector<int> arr;
   //insert elements
   arr.push_back(10);
   arr.push_back(20);
   arr.push_back(30);
   arr.push_back(40);
   arr.push_back(50);
   arr.push_back(60);
   for(int i = 0; i<arr.size(); i++){ //traverse
      cout << arr[i] << " ";
   }
   cout << endl;  
   //delete elements
   arr.erase(arr.begin() + 2);
   arr.erase(arr.begin() + 3);
   for(int i = 0; i<arr.size(); i++){ //traverse
      cout << arr[i] << " ";
   }
   cout << endl;
   arr[0] = 100; //update
   for(int i = 0; i<arr.size(); i++){ //traverse
      cout << arr[i] << " ";
   }
   cout << endl;
}

Output

10 20 30 40 50 60
10 20 40 60
100 20 40 60