🚀 Programming Example
Menu-Based Array Deletion System (Java Program)
Learn this program step-by-step with algorithm, source code, output and detailed explanation.
import java.util.Scanner;
public class ArrayDeletionMenu {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int[] arr = new int[100];
int n, i, choice, pos;
System.out.print("Enter number of elements: ");
n = sc.nextInt();
System.out.println("Enter elements:");
for(i = 0; i < n; i++) {
arr[i] = sc.nextInt();
}
System.out.println("\nChoose Deletion Type:");
System.out.println("1. Delete from Beginning");
System.out.println("2. Delete from End");
System.out.println("3. Delete from Specific Position");
choice = sc.nextInt();
switch(choice) {
case 1:
for(i = 0; i < n - 1; i++) {
arr[i] = arr[i + 1];
}
n--;
break;
case 2:
n--;
break;
case 3:
System.out.print("Enter position: ");
pos = sc.nextInt();
for(i = pos; i < n - 1; i++) {
arr[i] = arr[i + 1];
}
n--;
break;
default:
System.out.println("Invalid choice!");
}
System.out.println("\nArray after deletion:");
for(i = 0; i < n; i++) {
System.out.print(arr[i] + " ");
}
}
}
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.