Ola Cabs Senior QA Engineer Interview Questions and Answers

Round duration - 60 minutes
Round difficulty - Easy

This was a written test with 2 coding problems.

Q1. 
Combination Sum Problem Statement
Given an array of distinct positive integers ARR and a non-negative integer 'B', find all unique combinations in the array where the sum is equal to 'B'. Numbers can be c...read more
Ans. 
The task is to find all unique combinations in an array where the sum is equal to a given target sum, with elements in non-decreasing order.
• Use backtracking to generate all possible combinations.

• Sort the array to ensure elements are in non-decreasing order.

• Keep track of the current combination and sum while exploring the array.

• Recursively explore all possible combinations.

• Return the valid combinations that sum up to th
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Q2. 
Next Greater Number Problem Statement
Given a string S which represents a number, determine the smallest number strictly greater than the original number composed of the same digits. Each digit's frequenc...read more
Ans. 
The task is to find the smallest number greater than the given number with the same set of digits.
• Iterate from right to left to find the first digit that can be swapped with a larger digit to make the number greater.

• Swap this digit with the smallest digit to its right that is larger than it.

• Sort all digits to the right of the swapped digit in ascending order to get the smallest number.

• If no such number exists, return -
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Q1. Basics on Automation
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2 programming question moderate level

Q1. Java Questions/ Selenium Question/ SQL
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Q1. Managerial Round. Puzzle/ Basic program
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Q1. Salary Discussion, basic HR questions
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Q1. Api status codes, api debugging questions
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Q2. If you get 500 error how to debug.
Ans. 
To debug a 500 error, check server logs, review code changes, test API endpoints, and use debugging tools.
• Check server logs for error details

• Review recent code changes that may have caused the error

• Test API endpoints using tools like Postman

• Use debugging tools like Chrome DevTools or Firebug
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Q3. One java string question merge two strings diagonally.
Ans. 
Merge two strings diagonally in a Java array of strings.
• Iterate through each row and column to merge characters diagonally

• Keep track of the diagonal position to insert characters from both strings

• Handle cases where strings have different lengths

• Example: String 1: 'hello', String 2: 'world', Merged: 'hweolrllod'

• Example: String 1: 'abc', String 2: '123', Merged: 'a1b2c3'
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Q1. Java coding and selenium basics
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Q1. Appium and charles api handling
Ans. 
Appium is a mobile automation tool while Charles API is a web debugging proxy tool.
• Appium is used for automating mobile apps on iOS and Android platforms.

• Charles API is used for intercepting and analyzing network traffic between a client and server.

• Appium can be used in conjunction with Charles API to capture and analyze network traffic during mobile app testing.

• This can help identify and debug issues related to networ...read more
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Q1. Aptitude and other discussions
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Q1. What are your salary expectations?
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Q2. Why should we hire you?
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Q3. Why are you looking for a change?
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Interview was very good, asked coding questions and testing principles

Reasoning, Manual Testing, Java, selenium

Java code 2 program then selenium questions, API Testing, DataBase

Java,Selenium,SQL, Lending Solutions

Q1. Salary Negotiation
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Mcq and Coding Question

Q1. Java and Selenium
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