Assistant System Engineer

Ninja is now bored with numbers and is now playing with characters but hates when he gets repeated characters. Ninja is provided a string, and he wants to return the first unique character in the string.The string will contain characters only from the English alphabet set, i.e., ('A' - 'Z') and ('a' - 'z'). If there is no non-repeating character, print the first character of the string. If there is no non-repeating character, return the first character of the string.

Ninja is learning a new but strange language known as Alien Language. Alien language possesses the same alphabets as of English language, but their order is different. The order of letters are given as ‘ORDER’ string. Ninja has ‘N’ words in the ‘WORDS’ array. Ninja’s task is to check whether the words of ‘WORDS’ are sorted lexicographically in this alien language or not.

Note: ‘ORDER’ consists of all 26 letters of English alphabet.

For Example

If ‘WORDS’ = ["word","world","row"], ‘ORDER’ = "worldabcefghijkmnpqstuvxyz",the answer will be ‘NO’ as first and second words are not lexicographically sorted as ‘l’ comes before ‘d’ in alien language.

What are ACID properties?

What is normalisation?

What is inheritance?

Ritik is stuck on a problem for the past few days. He has a stack 'S' of integers and his friend told him to sort the stack recursively.

Help Ritik to solve his problem so that he can show it off to his friend.

Note:

1. Looping through the stack is not allowed.
2. You need to return a stack that is sorted in descending order.

For example:

Given stack 'S' = 1 3 2 
The output will be 3 2 1 since it is the sorted order.

• Why do you want to join TCS?
• What are your strengths and weaknesses?
• What is one advice that you will give to your juniors?