Encora Junior Software Engineer Interview Questions, Process, and Tips

Q1. Tell me about yourself
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Q2. Different between let , const,var. Closure in javascript
Ans. 
let, const, and var are used to declare variables in JavaScript. Closures are functions that have access to their outer scope even after the outer function has finished executing.
• let: block-scoped variable declaration, can be reassigned

• const: block-scoped variable declaration, cannot be reassigned, but its properties can be modified

• var: function-scoped variable declaration, can be reassigned

• Closure: inner function has ...read more
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Q3. What is hoisting in javascript
Ans. 
Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.
• Variable declarations are hoisted to the top of their scope, but not their initializations.

• Function declarations are fully hoisted, including their definitions.

• Hoisting can lead to unexpected behavior if not understood properly.
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Q4. Some basic questions of javascript and html ,css
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Q5. String reverse program Factorial program
Ans. 
String reverse and factorial programs in array of strings.
• For string reverse program, iterate through the string from end to beginning and append each character to a new string.

• For factorial program, use a loop to multiply numbers from 1 to n.

• Example for string reverse: Input 'hello' -> Output 'olleh'

• Example for factorial: Input 5 -> Output 120 (5*4*3*2*1)
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Q1. Questions related to the array
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Q2. Addition of two array and array reverse
Ans. 
Add two arrays element-wise and reverse the resulting array of strings.
• Iterate through both arrays and add corresponding elements together.

• Reverse the resulting array of strings.

• Handle edge cases like arrays of different lengths.

• Example: ['1', '2', '3'] + ['4', '5', '6'] = ['5', '7', '9'] -> reverse -> ['9', '7', '5']
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Q3. String method with explanation any 5
Ans. 
String methods are used to manipulate and work with strings in programming languages.
• toUpperCase(): Converts a string to uppercase

• toLowerCase(): Converts a string to lowercase

• charAt(index): Returns the character at the specified index

• indexOf(substring): Returns the index of the first occurrence of a substring

• split(delimiter): Splits a string into an array of substrings based on a delimiter
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Q1. Tell me about yourself
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Q2. What is your strength
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Basic coding test, Oops program and some technical problem.

Q1. Explain oops concepts in detail. Difference between Abstraction and interface.
Ans. 
OOPs concepts include encapsulation, inheritance, polymorphism, and abstraction. Abstraction is a concept where only relevant information is shown to the user, while interface is a blueprint for classes.
• OOPs concepts: encapsulation, inheritance, polymorphism, abstraction

• Abstraction: showing only relevant information to the user

• Interface: blueprint for classes, defines methods without implementation

• Example: Abstraction ...read more
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Q1. All basic details, company policies and benefits etc.
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