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Qualcomm Placement Papers 2025

Overview

This page is a working set of Qualcomm placement papers from 2025: from student reports questions, the 2025 online assessment pattern, and step-by-step solutions. Use it to see what Qualcomm 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 Qualcomm drive.

Download 2025 Placement Papers

Qualcomm 2025 paper 1

Latest Qualcomm placement paper with coding problems and solutions

Qualcomm 2025 paper 2

Additional 2025 Qualcomm paper with detailed solutions

Qualcomm 2025 paper 3

Another 2025 Qualcomm paper with comprehensive solutions

Qualcomm Online Assessment 2025 pattern

The 2025 exam pattern remains similar to 2024. For detailed exam pattern, see 2024 Papers.

Note: The pattern may have minor variations. Check the latest updates from the company.

Qualcomm Placement Papers 2025 - actual questions & solutions

This section contains practice questions styled on Qualcomm 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: two sum

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Problem Statement: Given an array of integers and a target, return indices of two numbers that add up to target.

Example:

Input: nums = [2, 7, 11, 15], target = 9
Output: [0, 1]

Solution (Java):

public int[] twoSum(int[] nums, int target) {
    Map<Integer, Integer> map = new HashMap<>();
    for (int i = 0; i < nums.length; i++) {
        int need = target - nums[i];
        if (map.containsKey(need)) return new int[]{map.get(need), i};
        map.put(nums[i], i);
    }
    return new int[]{};
}

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

Question 2: 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 3: merge two sorted lists

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Problem Statement: Merge two sorted linked lists and return a new sorted list.

Example:

Input: 1→2→4 , 1→3→4
Output: 1→1→2→3→4→4

Solution (Java):

public ListNode mergeTwoLists(ListNode a, ListNode b) {
    ListNode dummy = new ListNode(0), cur = dummy;
    while (a != null && b != null) {
        if (a.val <= b.val) { cur.next = a; a = a.next; }
        else { cur.next = b; b = b.next; }
        cur = cur.next;
    }
    cur.next = (a != null) ? a : b;
    return dummy.next;
}

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

Question 4: 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 5: first non-repeating character

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Problem Statement: Return the first non-repeating character in a string, or ‘_’ if none.

Example:

Input: "swiss"
Output: 'w'

Solution (Java):

public char firstUnique(String s) {
    int[] freq = new int[256];
    for (char c : s.toCharArray()) freq[c]++;
    for (char c : s.toCharArray()) if (freq[c] == 1) return c;
    return '_';
}

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

Question 6: 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 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: Time complexity of binary search on a sorted array of n elements is?

Solution:

Each step halves the search space → O(log n).

Answer: O(log n)

Question 9

Q9: In OOP, hiding internal details and showing only essential features is called?

Solution:

This is the definition of Encapsulation (often paired with abstraction in interviews).

Answer: Encapsulation

Question 10

Q10: Which protocol is connection-oriented at the transport layer?

Solution:

TCP is connection-oriented; UDP is connectionless.

Answer: TCP

Question 11

Q11: Virtual memory is typically implemented using?

Solution:

OS uses demand paging (and sometimes segmentation) to implement virtual memory.

Answer: Demand paging

Hiring volume

2025 Data: Qualcomm is actively hiring 600-1200 candidates in 2025. The company is conducting placement drives at 60+ colleges across India.

Salary packages

2025 Packages: ₹35-45 LPA for freshers (updated packages)

Process updates

2025 Updates: Latest assessment tools, improved interview process

Key insights from 2025 Qualcomm Online Assessment

  1. Coding Section is Critical: Must solve 2-3 coding problems correctly to advance
  2. Technical MCQs: Strong emphasis on CS fundamentals, OOP, embedded systems, wireless communication, 5G
  3. Time Management: 2-3 coding problems in 60-90 minutes + 15-20 technical MCQs in 30-40 minutes + 10-15 aptitude in 20-30 minutes
  4. Success Rate: Only 10-15% cleared OA and advanced to interviews
  5. Platform: Qualcomm’s assessment platform or HackerRank
  6. Focus Areas: DSA, algorithms, embedded systems, wireless communication, 5G, chip design
  7. Enhanced Emphasis: Optimal solutions, 5G technologies, and AI on edge devices

Qualcomm 2025 interview experiences

Based on recent candidate experiences from 2025 Qualcomm interviews:

2025 Interview Process:

  1. Online Assessment (90-120 minutes): Coding (2-3 problems) + Technical MCQs (15-20) + Aptitude (10-15)
  2. Technical Phone Screen (45-60 minutes): Coding problems, algorithm discussions, embedded systems, 5G concepts
  3. Onsite/Virtual Interviews (4-5 rounds, 45-60 minutes each):
  • Coding rounds (2-3): Algorithms, data structures, problem-solving, embedded algorithms
  • System Design rounds: Embedded systems, 5G networks, wireless communication, AI on edge devices
  • Behavioral rounds: Problem-solving approach, innovation, teamwork, impact

2025 Interview Trends:

  • Increased emphasis on 5G technologies and AI on edge devices
  • More focus on optimal solutions and embedded system design
  • Enhanced behavioral questions about innovation and impact
  • Questions about 5G networks, edge AI, and wireless communication

Common 2025 Interview Topics:

  • Coding: Arrays, strings, trees, graphs, dynamic programming, embedded algorithms
  • Technical: Embedded systems, 5G networks, wireless communication, chip design, AI on edge
  • System Design: Embedded systems, 5G networks, wireless protocols, chip architecture, edge AI
  • Behavioral: Problem-solving, innovation, teamwork, impact, 5G/AI passion
  • Qualcomm Technologies: Snapdragon processors, 5G networks, wireless communication, edge AI

Success Tips:

  • Strong coding performance is essential - solve problems optimally
  • Understand embedded systems, 5G networks, and AI on edge devices deeply
  • Practice system design for embedded systems and 5G networks
  • Prepare examples demonstrating innovation and problem-solving
  • Learn Qualcomm technologies - Snapdragon, 5G, edge AI, wireless communication
  • Practice explaining your thought process clearly

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

Preparation tips for Qualcomm 2025 pattern

  1. Master Coding Fundamentals: Focus on solving 2-3 coding problems correctly - arrays, trees, graphs, DP
  2. Embedded Systems Expertise: Strong understanding of embedded systems, C/C++ programming, real-time systems
  3. Practice Previous Year Papers: Solve Qualcomm OA papers from 2020-2025 to understand evolving patterns
  4. Time Management: Practice completing 2-3 coding problems in 60-90 minutes
  5. Technical MCQs: Practice CS fundamentals, OOP, embedded systems, 5G networks, wireless communication
  6. LeetCode Practice: Solve 200+ LeetCode problems focusing on arrays, strings, trees, graphs (medium-hard difficulty)
  7. Embedded Systems: Learn embedded systems, C/C++ programming, real-time systems, edge computing
  8. 5G Technologies: Understand 5G networks, wireless protocols, edge AI, communication systems
  9. Qualcomm Technologies: Learn Snapdragon processors, 5G networks, wireless communication, edge AI
  10. Behavioral Preparation: Prepare examples using STAR format - innovation, problem-solving, 5G/AI passion
  11. Mock Tests: Take timed practice tests to improve speed and accuracy

Comments & Suggestions

2024 papers

Coding questions

Interview experience

Preparation guide

Qualcomm hub

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