Apple Software Developer Intern Interview Questions, Process, and Tips

Q1. Why you want to join company
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Q2. Puzzle question
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Easy to medium questions

Q1. Create a software
Ans. 
A software for managing inventory in a retail store
• Create a user-friendly interface for adding, updating, and deleting products

• Include features for tracking sales, restocking inventory, and generating reports

• Implement barcode scanning functionality for quick product lookup
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Q1. Tell me about yourself
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Aptitude and dsa questions

Q1. Sql, Oops, dsa, API and projects were asked
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Q2. Some sql queries
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Q1. Normal interaction to know about me
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Q1. 1. Check all the permutations of palindrome in an array
Ans. 
Find all permutations of palindromes in an array of strings.
• Iterate through each string in the array.

• For each string, generate all possible permutations.

• Check if each permutation is a palindrome.

• Return the list of palindromic permutations.
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Q2. 2. Toggle a bit
Ans. 
Toggle a bit in a binary number
• Convert the number to binary representation

• Identify the bit position to toggle

• Toggle the bit using bitwise XOR operator

• Convert the modified binary number back to decimal
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Q3. 3. Swap numbers using bit operators
Ans. 
Swapping numbers using bit operators.
• Use XOR operator to swap two numbers without using a temporary variable

• XORing a number with itself results in 0

• Example: a = 5, b = 7. a ^= b; b ^= a; a ^= b; // a = 7, b = 5
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Q1. Why do want to work here?
Ans. 
I want to work here because of the company's reputation, the opportunity for growth, and the chance to work on innovative projects.
• Company's reputation: The company has a strong reputation in the industry for its high-quality software development work.

• Opportunity for growth: I believe that working here will provide me with ample opportunities to learn and grow as a software developer.

• Innovative projects: I am excited a...read more
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Q2. Tell me about yourself?
Ans. 
I am a software development intern with a passion for coding and problem-solving.
• Currently pursuing a degree in Computer Science

• Proficient in programming languages such as Java, C++, and Python

• Experience with web development frameworks like React and Angular

• Completed several projects including a mobile app for task management

• Strong problem-solving and analytical skills
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Q1. Questions were regarding my previous internships and projects
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Round duration - 70 minutes
Round difficulty - Medium

It was held at 7:00 pm. STL functions were not allowed. But STL containers like queues were allowed. One question was easy-medium, one was medium and one was hard. Everyone got different sets of questions. Make sure you solve all the questions from Samsung online Test, as they tend to repeat. Only 2 sample test cases were visible and Other Test Cases were hidden.

Q1. 
Game of Stones Problem Statement
Two players, 'Ale' and 'Bob', are playing a game with a pile of stones. Your task is to determine the winner if both play optimally.
Rules of the Game:
1. On each turn, ...read more
Ans. Game Theory
• It is clear that if the number of stones is ‘1’ then ‘Ale’ wins the game. If ‘2’ then also ‘Ale’ wins the match, and if ‘3’ then ‘Bob’ wins the game.
• So we can observe that, if anyone has a chance to choose a stone from ‘3’ number of stones then another opponent will the game. If ‘Ale’ choosing the stones from ‘3’ number stone then ‘Bob’ will win and vice versa.
• If the number of stones is ‘4’ then ‘Ale’ will w...read more
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Q2. 
Largest Number in Binary Tree
You are provided with a Binary Tree consisting of 'N' nodes, where each node holds an integer value. Your task is to determine the largest possible number that can be formed ...read more
Ans. Sorting
A simple solution would be to store all the node values to the list/array by traversing the whole Binary Tree and the problem now is that given a list of non-negative integers, arrange them such that they form the largest number. To solve this problem, sort the array in descending order, but sorting the list/array does not work here.
 
The idea is to use any of the comparison-based sorting algorithms.
 
1. We...read more
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Q3. 
Bridge in Graph Problem Statement
Given an undirected graph with V vertices and E edges, your task is to find all the bridges in this graph. A bridge is an edge that, when removed, increases the number of...read more
Ans. Brute Force
The brute force approach to find all the bridges in a given graph is to check for every edge if it is a bridge or not, by first not considering current edge is not in given graph and then checking if the vertices that it was connecting are still connected or not, using DFS(DepthFirst Search). Given below is an algorithm that will find all bridges in a graph.
 
Algorithm :
1. Initialise a visited array with fa...read more
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Round duration - 60 minutes
Round difficulty - Easy

The interviewer was very friendly. It started at 10:00 AM and lasted for 60 minutes. It was the only technical interview and NO HR interview was there. The video was kept on with screen sharing.

Q1. 
Sum of Digits Problem Statement
Given an integer 'N', continue summing its digits until the result is a single-digit number. Your task is to determine the final value of 'N' after applying this operation ...read more
Ans. Brute Force Approach
The main idea is to do the sum of digits until it becomes less than 10.
 
Algorithm:
• Add a condition if N is less than 10 then return N.
• Do the sum of all digits.
• Make a recursive call and pass the sum of digits as N.
• Return the answer which you get from a recursive call.
Space Complexity: O(1)Explanation:
O(1).
 
We are using constant space to solve this.
Time Complexity: OtherExplanation:
O(log10(...read more
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Q2. 
Sum of Squares of First N Natural Numbers Problem Statement
You are tasked with finding the sum of squares of the first N natural numbers for given test cases.
Input:
The first line contains an integer ...read more
Ans. Brute Force - Recursive
• Write a recursive solution for adding the sum of the squares of the first ‘N’ natural numbers.
• The base case would be the sum of the first natural number, which is 1.
• Sum up the squares of each number from 1 to ‘N’.
• Finally, return this sum.
Space Complexity: O(1)Explanation:
O(N), where ‘N’ is the given number.
Considering the recursive stack space.
Time Complexity: O(1)Explanation:
O(N), where ‘N’ is...read more
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Q3. 
Binary Tree to Doubly Linked List
Transform a given Binary Tree into a Doubly Linked List.
Ensure that the nodes in the Doubly Linked List follow the Inorder Traversal of the Binary Tree.
Input:
The fi...read more
Ans. Recursive Solution - 1
• If the left subtree exists, recursively convert the left subtree to Doubly Linked List.
• If the right subtree exists, recursively convert the right subtree to Doubly Linked List.
• When in the left subtree, find the inorder predecessor of the root, make this as the previous of the root and its next as the root.
• Similarly, when in the right subtree, find the inorder successor of the root, make this as th...read more
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3h test with 1question

Q1. Realted to oa and virtual function
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Q1. Normal hr and puzzle
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