Paytm Interview Experience 2018

Round 1: Coding Round

2 coding questions both from strings :

1. To find no of distinct years from the given paragraph.(paragraph consists of 2 or more dates in dd-mm-yyyy format)
2. To reverse a sentence and check whether the reversed string is equal to the original one.(do not remember the question exactly)

Round 2:

1. Explain all OOPs features of JAVA and write a code differentiating run-time and compile-time polymorphism.(since they required backend java developers)
2. Given an array of n-2 elements. The range of elements is n and 2 elements are missing. Find them and write a code for the same.
3. https://www.geeksforgeeks.org/sort-an-array-of-0s-1s-and-2s/
4. Given an array of n elements in which one element is missing.Find out the missing element.

Round 3:

1. Write a program to reverse a string as given a string : “You live in Ranchi”, the output should be : “Ranchi in live you”.
2. Write a sql query to get nth highest salary. I gave a solution using limits. They asked to give a solution without using limits.
3. Most efficient solution of an expression p^k.
4. Some networking questions.Working of HTTP, HTTPs etc.
5. Java questions on inheritance and other OOPs concepts.