HCLTech Golang Developer Interview Questions, Process, and Tips

Golang Basics, DBMS, Channels, Unit Test

1) Search an array element
2) braces balance program
3) anagrams Program

Q1. What is map and how it i useful
Ans. 
A map is a built-in data structure in Golang that allows you to store key-value pairs.
• Maps are unordered collections of key-value pairs.

• Keys in a map must be unique.

• Maps are useful for efficient lookup and retrieval of values based on their keys.

• You can add, update, and delete key-value pairs in a map.

• Example: map[string]int{"apple": 5, "banana": 3}
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Q2. Explain about slice
Ans. 
A slice is a dynamically-sized, flexible view of an underlying array in Go.
• Slices are similar to arrays but with a variable length.

• They are reference types and can be resized.

• Slices can be created using the make() function or by slicing an existing array.

• They provide a convenient way to work with collections of data.
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Q3. Difference between slice and array
Ans. 
Arrays have fixed length, while slices are dynamic. Slices are references to arrays.
• Arrays have a fixed length, while slices can grow or shrink dynamically.

• Slices are references to arrays, allowing for efficient memory usage.

• Arrays are value types, while slices are reference types.

• Arrays are initialized with a specific size, while slices can be created from existing arrays or other slices.

• Slices provide additional func
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Q4. What are go routines
Ans. 
Go routines are lightweight threads of execution that allow concurrent programming in Go.
• Go routines are created using the 'go' keyword followed by a function call.

• They are executed concurrently and independently of the main program.

• Go routines communicate with each other using channels.

• They are used to achieve concurrency and parallelism in Go programs.
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Q5. How channels are used
Ans. 
Channels are used in Go to enable communication and synchronization between goroutines.
• Channels are typed and can only send or receive values of that type.

• They can be created using the built-in make() function.

• The <- operator is used to send and receive values from channels.

• Channels can be used to implement various synchronization patterns like blocking and non-blocking operations.

• They are commonly used for concurrent
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Q1. Reverse a string
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Ask to write a program for find prime number of n numbers using gorountines

Golang interview technical task

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