Associate Software Engineer

For a given array with N elements, you need to find the length of the longest subsequence from the array such that all the elements of the subsequence are sorted in strictly increasing order.

Strictly Increasing Sequence is when each term in the sequence is larger than the preceding term.

For example:

[1, 2, 3, 4] is a strictly increasing array, while [2, 1, 4, 3] is not.

You are given two strings 'str1' and 'str2'. Find the minimum operations required to convert str1 into str2.

An Operation is defined as:

A character from an index of a string(str1) is put at the end of it, is defined as a single operation.

 Note :

You cannot perform any operation on the string, str2.

You are present at point ‘A’ which is the top-left cell of an M X N matrix, your destination is point ‘B’, which is the bottom-right cell of the same matrix. Your task is to find the total number of unique paths from point ‘A’ to point ‘B’.In other words, you will be given the dimensions of the matrix as integers ‘M’ and ‘N’, your task is to find the total number of unique paths from the cell MATRIX[0][0] to MATRIX['M' - 1]['N' - 1].

To traverse in the matrix, you can either move Right or Down at each step. For example in a given point MATRIX[i] [j], you can move to either MATRIX[i + 1][j] or MATRIX[i][j + 1].

A can finish a task in 12 days, and B can finish the same task in 18 days. If they work together, how long will it take them to complete the task?

A) 7.2 days
B) 8 days
C) 10 days
D) 12 days

A shopkeeper bought 20 pens for ₹400 and sold them at ₹25 each. What is the percentage profit made by the shopkeeper?

A) 25%
B) 30%
C) 35%
D) 40%

In a class of 50 students, 40% are boys. How many girls are there in the class?

A) 30
B) 20
C) 40
D) 10

What is the simple interest on ₹1200 for 2 years at a rate of 5% per annum?

A) ₹120
B) ₹130
C) ₹140
D) ₹150

A car travels 60 kilometres in 1 hour. What is the speed of the car in meters per second?

A) 15 m/s
B) 10 m/s
C) 20 m/s
D) 30 m/s

The average of five numbers is 20. If four of the numbers are 10, 15, 30, and 25, what is the fifth number?

A) 25
B) 20
C) 30
D) 35

A mixture contains 40 litres of alcohol and 60 litres of water. If 20 litres of alcohol is replaced with water, what will be the new ratio of alcohol to water?

A) 2:3
B) 3:2
C) 1:1
D) 4:3

What is normalization? Explain 1NF, 2NF, and 3NF with examples. (Learn)

You are given a string 'S'. Your task is to check whether the string is palindrome or not. For checking palindrome, consider alphabets and numbers only and ignore the symbols and whitespaces.

Note :

String 'S' is NOT case sensitive.

Example :

Let S = “c1 O$d@eeD o1c”.
If we ignore the special characters, whitespaces and convert all uppercase letters to lowercase, we get S = “c1odeedo1c”, which is a palindrome. Hence, the given string is also a palindrome.

Write a simple program to find if a number is prime or not.

What is a foreign key in DBMS? How is it different from a primary key? (Learn)

You are given two identical eggs and a 100-floor building. The eggs may break if dropped from a certain floor or above, and they will not break if dropped from below that floor.
Your task is to determine the highest floor from which you can drop an egg without it breaking, using the fewest number of drops in the worst case.

You are allowed to break both eggs in the process.

What is the minimum number of drops needed to guarantee finding the critical floor in the worst-case scenario?

• Asked for a self-introduction.
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