DSA with java

//it is for adt in an array

 import java.util.*;

class fa {

    public static void main(String[] args) {

        Scanner scan=new Scanner(System.in);

        int []a=new int[100];

        int n,i;

    System.out.println("Enter no of elemnts in an array below 100:");

        n=scan.nextInt();

        System.out.println("Enter no of elements: ");

        for (i=0;i<n;i++){

            a[i]=scan.nextInt();

        }

        scan.close();

       

    }

}

//insertion at particular index

// Online Java Compiler

// Use this editor to write, compile and run your Java code online

import java.util.*;
public class Array {
    public static void main(String[] args) {
        int[] a = new int[100];
        int N, pos, ele, current;
        Scanner scanner = new Scanner(System.in);
        // Input size for the array
        System.out.print("Enter the size of an array below 100: ");
        N = scanner.nextInt();
        // Input array elements
        System.out.println("Enter array elements:");

        for (int i = 0; i < N; i++) {

            a[i] = scanner.nextInt();

        }
        // Input position to insert the value
       System.out.print("Enter the position to insert the value: ");

        pos = scanner.nextInt();  // 1-based index
        // Input element to insert
        System.out.print("Enter the element to insert: ");
        ele = scanner.nextInt();
        // Insert element
        current = N;
        for (int i = current; i >= pos; i--) {

            a[i] = a[i - 1]; // Shift elements one position forward

        }

        a[pos ] = ele; // Insert the new element at the specified position
        current++; // Update the current size
        // Print the updated array
        System.out.println("Updated array:");
        for (int i = 0; i < current; i++) {

            System.out.print(a[i] + " ");

        }

    }

}
//o/p is:
Enter the size of an array below 100: 4
Enter array elements:
1
2
3
4
Enter the position to insert the value: 4
Enter the element to insert: 5
Updated array:
1 2 3 4 5 

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