System Engineer

You are given an integer 'n'. Calculate the sum of even and odd digits of 'n', represented in decimals.

Even and odd do not refer to the position of the digit but to the polarity of the digit.

Return the answer in the form of an array of size 2, such that the 0th index represents the even sum and the 1st index represents the odd sum.

Example:

Input: 'n' = 1986.

Output: [14, 10]

Explanation: Even digits are 8 & 6, and odd digits are 1 & 9. The sum of even digits = 14, and the sum of odd digits = 10.

Difference between Stack and Queue Data Structures

You have been given two singly Linked Lists, where each of them represents a positive number without any leading zeros.

Your task is to add these two numbers and print the summation in the form of a linked list.

Example:

If the first linked list is 1 -> 2 -> 3 -> 4 -> 5 -> NULL and the second linked list is 4 -> 5 -> NULL.

The two numbers represented by these two lists are 12345 and 45, respectively. So, adding these two numbers gives 12390. 

So, the linked list representation of this number is 1 -> 2 -> 3 -> 9 -> 0 -> NULL.

You have been given a Binary Tree of 'n' nodes, where the nodes have integer values. Your task is to return the In-Order traversal of the given binary tree.

For example :

For the given binary tree:

The Inorder traversal will be [5, 3, 2, 1, 7, 4, 6].

Basically we TCS HR professionals may ask you tricky questions during the HR interview so they can evaluate your basic skills as well as clarify the points you mentioned on your resume. 

1 .Why do you opt for TCS only? 

2. Will you be able to relocate? 

3. What is the Difference between product-based & service-based companies?