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Basic aptitude questions
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN
INNER JOIN returns rows when there is at least one match in both tables
LEFT JOIN returns all rows from the left table and the matched rows from the right table
RIGHT JOIN returns all rows from the right table and the matched rows from the left table
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I have worked on various projects involving data analysis, software development, and system integration.
Developed a data analysis tool using Python to analyze customer feedback and improve product features
Integrated a new payment gateway system into an existing e-commerce platform
Collaborated with a cross-functional team to develop a mobile application for tracking fitness goals
Being the only analyst on a critical project with tight deadlines and facing technical issues
Working on a project with tight deadlines
Facing technical issues without immediate support
Being the only analyst responsible for resolving the issues
Feeling overwhelmed and stressed
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posted on 22 Mar 2015
I applied via Naukri.com and was interviewed before Jun 2019. There were 3 interview rounds.
Implement stack data structure
Use an array or linked list to store elements
Push operation adds element to top of stack
Pop operation removes element from top of stack
Peek operation returns top element without removing it
Global variables are accessible from any part of the program and can be modified by any function.
Global variables are declared outside of any function.
They can be accessed and modified by any function in the program.
If a function modifies the value of a global variable, the new value is visible to all other functions.
Global variables can be useful for sharing data between functions.
However, overuse of global variables
Program to transpose a matrix
Iterate through rows and columns of the matrix
Swap the elements at (i,j) and (j,i) positions
Return the transposed matrix
Pre and post fix operators are used to increment or decrement a value before or after it is used in an expression.
Pre-fix operator (++x) increments the value of x and returns the new value.
Post-fix operator (x++) returns the value of x and then increments it.
Both operators can be used with variables of numeric data types.
They can also be used with pointers to increment or decrement the memory address they point to.
I applied via Naukri.com and was interviewed before May 2020. There were 5 interview rounds.
I applied via Job Fair and was interviewed before Apr 2017. There were 5 interview rounds.
posted on 14 Oct 2024
I applied via Approached by Company and was interviewed in Apr 2024. There were 4 interview rounds.
30 min projects related questions
posted on 27 Mar 2024
I applied via Naukri.com and was interviewed before Aug 2023. There was 1 interview round.
posted on 16 Jan 2025
I applied via Campus Placement and was interviewed in Dec 2024. There were 2 interview rounds.
3 coding questions were given and all should have to be passed for the next round
based on 1 interview
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