Answer Posted / Chandra Prakash

In Java, you can use the System.arraycopy() method to insert an element at a specific position in an array. Here's a simple example:

```java
public void insertAt(int arr[], int index, int element) {
if (index > arr.length)
System.out.println("Invalid Index");
else {
for (int i = arr.length; i > index; i--)
arr[i] = arr[i - 1];
arr[index] = element;
}
}
```

For the following COBOL code, draw the Binary tree? 01 STUDENT_REC. 02 NAME. 03 FIRST_NAME PIC X(10). 03 LAST_NAME PIC X(10). 02 YEAR_OF_STUDY. 03 FIRST_SEM PIC XX. 03 SECOND_SEM PIC XX.

1372

Draw a binary Tree for the expression : A * B - (C + D) * (P / Q)

1479

Write a program for Sorting an Array. Which sorting will you prefer?

1024

“int a[] = new int[3]{1, 2, 3}” – This a legal way of defining the arrays?

1266

Can you declare an array without assigning the size of an array?

1190

What sort of serious problems have you experienced, and how have you handled them?

1016