Answer Posted / Rajan Malhotra

The Collection is both an interface and a superclass in Java. The interface defines a common set of methods for collections, while the class serves as a root class for all collection classes.

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

1501

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.

1395

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

1040

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

1284

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

1025

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

1210