Cognizant Trainee Analyst Interview Questions, Process, and Tips

Round duration - 180 Minutes
Round difficulty - Medium

Coding question 2 easy,1 hard

Q1. 
Minimum Stops for Ninja's Journey Problem Statement
Ninja wishes to travel from his house to a destination X miles away. He knows there are Y gas stations along the way, each station i located at a distan...read more
Ans. 
Calculate the minimum number of refueling stops needed for a ninja to reach a destination with given gas stations and starting fuel.
• Iterate through gas stations while maintaining current fuel level and number of stops made

• Refuel at each station if necessary to ensure enough fuel to reach the next station or destination

• Keep track of the minimum number of stops needed to reach the destination
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Q2. 
Black Friday Discount Challenge
Imagine it's Black Friday and a supermarket is offering a discount to every 'Nth' customer. You are tasked with calculating bills for customers based on product prices and ...read more
Ans. 
The challenge involves calculating bills for customers on Black Friday based on discounts for every 'Nth' customer.
• Implement 'blackFriday' function to initialize discount for every Nth customer

• Implement 'generateBill' function to calculate total bill for each customer's purchase

• Consider input constraints and generate final bill amounts for each customer in each test case
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Q3. 
Ninja and His Secret Information Encoding Problem
Ninja, a new member of the FBI, has acquired some 'SECRET_INFORMATION' that he needs to share with his team. To ensure security against hackers, Ninja dec...read more
Ans. 
The task is to determine if the encoding and decoding process of 'SECRET_INFORMATION' is successful.
• Read the number of test cases 'T'

• For each test case, encode the 'SECRET_INFORMATION' and then decode it

• Compare the decoded string with the original 'SECRET_INFORMATION'

• Print 'Transmission successful' if they match, else print 'Transmission failed'
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Round duration - 30 Minutes
Round difficulty - Easy

Asked me how to reverse string,tell me about yourself,visualise data structures in real life,dbms questions easy one

Q1. 
Reverse the String Problem Statement
You are given a string STR which contains alphabets, numbers, and special characters. Your task is to reverse the string.
Example:
Input:
STR = "abcde"
Output:
"e...read more
Ans. 
Reverse a given string containing alphabets, numbers, and special characters.
• Iterate through the string from the end to the beginning and append each character to a new string.

• Use built-in functions like reverse() or slicing to reverse the string.

• Handle special characters and numbers while reversing the string.

• Ensure to consider the constraints provided in the problem statement.
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