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Centrico India
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I applied via Approached by Company and was interviewed in Jan 2024. There were 4 interview rounds.
Ticket booking system using rest
posted on 10 May 2020
I applied via Recruitment Consultant and was interviewed in Apr 2020. There were 4 interview rounds.
I applied via Recruitment Consultant and was interviewed in Jul 2021. There were 5 interview rounds.
I applied via Approached by Company and was interviewed in Aug 2021. There were 2 interview rounds.
Covered OOP fundamentals and Java
I applied via Naukri.com and was interviewed in Sep 2020. There were 4 interview rounds.
Math , gk, english
AI
I applied via Campus Placement and was interviewed in Feb 2023. There were 2 interview rounds.
Tuples are immutable sequences of elements. A string can be converted to a tuple using the tuple() function.
Tuples are similar to lists but are immutable
Elements of a tuple are enclosed in parentheses ()
A string can be converted to a tuple using the tuple() function
Each character in the string becomes an element in the tuple
Left join is a type of join operation in SQL that returns all the rows from the left table and matching rows from the right table.
Left join is performed using the 'left join' keyword in SQL
In Python, left join can be performed using the 'merge' function from the pandas library
Syntax: pd.merge(left_dataframe, right_dataframe, how='left', on='key_column')
Example: pd.merge(df1, df2, how='left', on='id')
HashMap is a data structure that stores key-value pairs and provides constant time complexity for basic operations.
HashMap allows quick access to values based on their keys
Keys must be unique and values can be duplicated
HashMap is not thread-safe and requires synchronization for concurrent access
Java's HashMap implementation uses hashing to distribute keys across buckets
posted on 9 Oct 2024
Easy applitute question with 1 coding question at the end
String builder is faster but not thread-safe, while string buffer is slower but thread-safe.
String builder is recommended for single-threaded applications for better performance.
String buffer is recommended for multi-threaded applications to ensure thread safety.
Example: StringBuilder sb = new StringBuilder(); StringBuffer sbf = new StringBuffer();
The final keyword in OOP is used to restrict the user from changing the value of a variable, overriding a method, or inheriting from a class.
Final variable: value cannot be changed once assigned
Final method: cannot be overridden in child classes
Final class: cannot be inherited by other classes
BSF graph explanation
BFS (Breadth-First Search) is a graph traversal algorithm that explores all the neighbor nodes at the present depth before moving on to the nodes at the next depth.
It uses a queue data structure to keep track of the nodes to visit next.
BFS is often used to find the shortest path in an unweighted graph.
Example: BFS can be used to find the shortest path in a maze from the starting point to the exit.
I applied via Campus Placement and was interviewed in Jul 2022. There were 4 interview rounds.
It was done on hackerrank the first question was related to array and second was on linked list and last was on sql
based on 3 interviews
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