MocDoc Interview Questions and Answers for Freshers

Arrange odd and even numbers in an array, even on RHS and odd on LHS.

• Create two pointers, one at the start and one at the end of the array.

• Swap the elements at the pointers if they are in the wrong position.

• Continue swapping until the pointers meet in the middle.

BODMAS is a mathematical rule used to evaluate expressions with multiple operators.

• BODMAS stands for Brackets, Orders, Division, Multiplication, Addition, and Subtraction.

• It is used to determine the order in which operations are performed in an expression.

• Brackets are evaluated first, followed by orders (exponents and roots), then division and multiplication, and finally addition and subtraction.

• For example, in the exp...read more

Different types of joins in SQL, Delete drop truncate difference

• Types of joins: Inner join, Left join, Right join, Full outer join

• Inner join returns only matching rows from both tables

• Left join returns all rows from left table and matching rows from right table

• Right join returns all rows from right table and matching rows from left table

• Full outer join returns all rows from both tables

• Delete is used to remove specific ...read more

Identify data structure based on insertion and deletion order

• If insertion and deletion follow LIFO order, it is a stack

• If insertion follows FIFO order and deletion follows LIFO order, it is a queue

• If insertion and deletion follow priority order, it is a priority queue

Find maximum element in an array in less than O(N)

• Use divide and conquer approach

• Compare maximum of left and right subarrays

• Recursively find maximum element