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Apple Placement Papers 2025

Overview

This page is a working set of Apple placement papers from 2025: from student reports questions, the 2025 online assessment pattern, and step-by-step solutions. Use it to see what Apple actually asked in the latest cycle, how hard the rounds were, and which themes (DSA, system design, aptitude, or role-specific topics) mattered most. Practice the problems below under timed conditions, then cross-check with the interview and preparation guides if you are targeting an upcoming Apple drive.

Apple Online Assessment 2025 pattern

Section Questions Time Difficulty
Coding Problems 2 60 min Medium-Hard
CS Fundamentals MCQs 18-20 30 min Medium

Apple Placement Papers 2025 - actual questions & solutions

This section contains practice questions styled on Apple placement papers 2025 (recent-cycle pattern), with worked solutions. Use them as timed sectional drills - from student reports drives vary by college and role, so treat this as a high-signal practice bank, not an official paper dump.

Question 1: binary tree level order

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Problem Statement: Return the level-order traversal of a binary tree.

Example:

Input: [3,9,20,null,null,15,7]
Output: [[3],[9,20],[15,7]]

Solution (Java):

public List<List<Integer>> levelOrder(TreeNode root) {
    List<List<Integer>> res = new ArrayList<>();
    if (root == null) return res;
    Queue<TreeNode> q = new ArrayDeque<>();
    q.add(root);
    while (!q.isEmpty()) {
        int sz = q.size();
        List<Integer> level = new ArrayList<>();
        for (int i = 0; i < sz; i++) {
            TreeNode n = q.poll();
            level.add(n.val);
            if (n.left != null) q.add(n.left);
            if (n.right != null) q.add(n.right);
        }
        res.add(level);
    }
    return res;
}

Time Complexity: O(n)
Space Complexity: O(n)

Question 2: climbing stairs

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Problem Statement: You can climb 1 or 2 steps. How many distinct ways to climb n stairs?

Example:

Input: n = 4
Output: 5

Solution (Java):

public int climbStairs(int n) {
    if (n <= 2) return n;
    int a = 1, b = 2;
    for (int i = 3; i <= n; i++) {
        int c = a + b; a = b; b = c;
    }
    return b;
}

Time Complexity: O(n)
Space Complexity: O(1)

Question 3: check palindrome

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Problem Statement: Return true if the string reads the same forward and backward (ignore case).

Example:

Input: "Level"
Output: true

Solution (Java):

public boolean isPalindrome(String s) {
    s = s.toLowerCase();
    int i = 0, j = s.length() - 1;
    while (i < j) {
        if (s.charAt(i++) != s.charAt(j--)) return false;
    }
    return true;
}

Time Complexity: O(n)
Space Complexity: O(1)

Question 4: valid parentheses

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Problem Statement: Given a string of brackets, determine if it is valid.

Example:

Input: "()[]{}"
Output: true

Solution (Java):

public boolean isValid(String s) {
    Deque<Character> st = new ArrayDeque<>();
    Map<Character, Character> pair = Map.of(')', '(', ']', '[', '}', '{');
    for (char c : s.toCharArray()) {
        if (pair.containsValue(c)) st.push(c);
        else if (st.isEmpty() || st.pop() != pair.get(c)) return false;
    }
    return st.isEmpty();
}

Time Complexity: O(n)
Space Complexity: O(n)

Question 5: maximum subarray sum

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Problem Statement: Find the contiguous subarray with the largest sum.

Example:

Input: [-2, 1, -3, 4, -1, 2, 1, -5, 4]
Output: 6  // [4, -1, 2, 1]

Solution (Java):

public int maxSubArray(int[] nums) {
    int best = nums[0], cur = nums[0];
    for (int i = 1; i < nums.length; i++) {
        cur = Math.max(nums[i], cur + nums[i]);
        best = Math.max(best, cur);
    }
    return best;
}

Time Complexity: O(n)
Space Complexity: O(1)

Question 6: longest common prefix

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Problem Statement: Find the longest common prefix string amongst an array of strings.

Example:

Input: ["flower","flow","flight"]
Output: "fl"

Solution (Java):

public String longestCommonPrefix(String[] strs) {
    if (strs.length == 0) return "";
    String pref = strs[0];
    for (int i = 1; i < strs.length; i++) {
        while (!strs[i].startsWith(pref)) {
            pref = pref.substring(0, pref.length() - 1);
            if (pref.isEmpty()) return "";
        }
    }
    return pref;
}

Time Complexity: O(S)
Space Complexity: O(1)

Question 7: rotate array right by k

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Problem Statement: Rotate the array to the right by k steps.

Example:

Input: [1,2,3,4,5,6,7], k = 3
Output: [5,6,7,1,2,3,4]

Solution (Java):

public void rotate(int[] nums, int k) {
    k %= nums.length;
    reverse(nums, 0, nums.length - 1);
    reverse(nums, 0, k - 1);
    reverse(nums, k, nums.length - 1);
}
void reverse(int[] a, int l, int r) {
    while (l < r) { int t = a[l]; a[l++] = a[r]; a[r--] = t; }
}

Time Complexity: O(n)
Space Complexity: O(1)

Question 8

Q8: Worst-case time complexity of quicksort is?

Solution:

Unbalanced partitions (already sorted with bad pivot) → O(n²).

Answer: O(n²)

Question 9

Q9: Which normal form removes transitive dependency?

Solution:

1NF: atomic values. 2NF: no partial dependency. 3NF: no transitive dependency.

Answer: 3NF

Question 10

Q10: Which SQL clause filters grouped rows after GROUP BY?

Solution:

HAVING filters aggregates; WHERE filters rows before grouping.

Answer: HAVING

Question 11

Q11: Which data structure uses FIFO order?

Solution:

FIFO = First In First Out → Queue. Stack is LIFO.

Answer: Queue

Expected hiring

  • Total Hires: 120+ freshers (highly selective)
  • Software Engineer I: 108+ selections

Salary packages

  • Software Engineer I: ₹35-50 LPA

Key insights from 2025 Apple Online Assessment

  1. Coding Section is Critical: Must solve both problems correctly to advance
  2. iOS/macOS Focus: Continued focus on iOS/macOS development knowledge
  3. Attention to Detail: Apple values meticulous attention to detail
  4. Time Management: 90 minutes for 20 questions requires excellent speed
  5. Difficulty Level: Apple interviews rated 3.0/5 difficulty
  6. Design Thinking: Emphasis on design thinking and UX principles
  7. Collaboration: Strong focus on collaboration and cross-functional work
  8. High Selectivity: Only 100+ freshers hired - highly selective process
  9. Learning Agility: Increased emphasis on learning unfamiliar tasks quickly

Apple 2025 interview experiences

Based on recent candidate experiences from 2025 Apple interviews:

2025 Interview Process:

  1. Online Assessment (90 minutes): 2 coding problems + 18 CS fundamentals MCQs (including iOS/macOS basics)
  2. Hiring Manager Screen (30-45 minutes): Initial screening with hiring manager
  3. Technical Phone Interviews (45-60 minutes): Coding problems, iOS/macOS discussions
  4. Onsite Interviews (4-5 rounds, 45 minutes each):
  • Coding rounds (2-3): Algorithms, data structures, problem-solving
  • System Design round: For experienced candidates
  • Behavioral round: Design thinking, collaboration, attention to detail, learning agility

2025 Interview Trends:

  • Increased emphasis on learning agility and adaptability
  • More focus on design thinking and Apple’s UX principles
  • Enhanced behavioral questions about collaboration and cross-functional work
  • Questions about approaching unfamiliar tasks

Common 2025 Interview Topics:

  • Coding: Arrays, strings, trees, graphs, dynamic programming
  • iOS/macOS: Development basics, frameworks, design patterns
  • System Design: Apple ecosystem systems, scalability
  • Behavioral: Design thinking, collaboration, attention to detail, learning agility
  • UX Principles: Apple’s design philosophy and user experience

2025 Interview Questions Examples:

  • “Why do you want to work at Apple?” (Behavioral)
  • “How would you approach learning about a task you’re completely unfamiliar with?” (Behavioral)
  • “Design a classical music product for Apple Music” (Product Design)
  • System Design questions for Apple ecosystem

Success Tips:

  • Strong coding performance is essential - solve problems with attention to detail
  • Learn iOS/macOS development basics even for general SWE roles
  • Practice design thinking and Apple’s UX principles
  • Prepare examples demonstrating meticulous attention to detail
  • Show collaboration and cross-functional work examples
  • Be ready to discuss learning agility and adaptability in detail
  • Understand Apple’s design philosophy and user-centric approach

Difficulty Rating: 3.0/5

For detailed interview experiences from 2025, visit Apple Interview Experience page.

Preparation tips for Apple 2025 pattern

  1. Master Coding Fundamentals: Focus on solving 2 coding problems correctly - arrays, strings, trees, graphs
  2. iOS/macOS Basics: Learn iOS/macOS development fundamentals and frameworks
  3. Practice Previous Year Papers: Solve Apple OA papers from 2020-2025 to understand evolving patterns
  4. Time Management: Practice completing 2 coding problems in 60 minutes, 18 MCQs in 30 minutes
  5. Design Thinking: Practice design thinking and Apple’s UX principles
  6. LeetCode Practice: Solve 200+ LeetCode problems focusing on arrays, strings, trees (medium-hard difficulty)
  7. Attention to Detail: Practice writing clean, well-documented code
  8. Behavioral Prep: Prepare examples demonstrating collaboration, attention to detail, and learning agility
  9. Apple Ecosystem: Understand Apple’s products and design philosophy
  10. Mock Tests: Take timed practice tests to improve speed and accuracy
  11. Learning Agility: Prepare examples showing how you quickly learn unfamiliar tasks

Comments & Suggestions

2024 papers

Coding questions

Interview experience

Preparation guide

Apple hub

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