ONE BCG Software Engineer Interview Questions and Answers for Experienced

Q1. Js basics question like hoisting, promise, call back.
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Q2. Reacts basics like dom, hooks, class components life cycle.
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Coding questions, counter app using react redux, array destructure and few js questions.

Q1. Sorting program without using any in built functions
Ans. 
Implement a sorting program without using any built-in functions
• Iterate through the array and compare each element with the rest to sort

• Use a sorting algorithm like bubble sort, selection sort, or insertion sort

• Implement the sorting logic using loops and conditional statements
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Q2. Writing a sort program
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Q1. Write a Java String program to replace the characters. Write a Java program for Encapsulation. What is the difference between Comparator and Comparable? In between an Interview, the screen was abruptly cl...read more
Ans. 
Java String program to replace characters, Encapsulation program, Comparator vs Comparable difference
• For Java String program to replace characters, use the replace() method to replace specific characters in a string.

• For Encapsulation in Java, use private access modifiers to restrict access to class variables and use public getter and setter methods to access and modify them.

• Comparator and Comparable are interfaces used...read more
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Q1. Wap to toggle the fourth bit of given number..?
Ans. 
Toggle the fourth bit of a given number.
• Extract the fourth bit using bitwise AND operation with 8 (1000 in binary)

• Toggle the fourth bit using bitwise XOR operation with 8 (1000 in binary)
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Q1. What is mutex and who it overcome with it..?
Ans. 
A mutex is a synchronization primitive used to control access to shared resources in a multi-threaded environment.
• Mutex stands for mutual exclusion

• It is used to prevent multiple threads from accessing shared resources simultaneously

• Mutexes are typically used to protect critical sections of code

• Example: In a multi-threaded program, a mutex can be used to ensure that only one thread can access a shared variable at a time
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Q1. Why you wanted to join this organisation only..?
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Basic aptitude and essay

Q1. Easy, questions around rojects
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Q1. It was the first technical round in they mostly asked all the basis to advance questions related to angular, javascript, Jasmine Karma, html ,css.
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Q1. It was the techno managerial round in which they just discussed about the agile methodologies
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Q1. Salary discussion and the hr told me about globallogic and some policies
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