Qualcomm Applications Engineer Interview Questions and Answers

Q1. Count freq of elements in array
Ans. 
Count frequency of elements in array of strings
• Iterate through the array and use a hashmap to store the frequency of each element

• Use a for loop to go through each element and update the count in the hashmap

• Return the hashmap with element frequencies
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Q1. Which is the best sorting algorithm
Ans. 
There is no one-size-fits-all answer as the best sorting algorithm depends on the specific use case and constraints.
• The best sorting algorithm depends on factors such as the size of the data set, the range of values, whether the data is mostly already sorted or not, and the available memory.

• For small data sets or nearly sorted data, insertion sort or bubble sort may be efficient.

• For large data sets, quicksort, mergesor...read more
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Write a program to print the permutations of abc

Q1. What do you know about Bill of Materials
Ans. 
Bill of Materials (BOM) is a comprehensive list of raw materials, components, and assemblies required to build a product.
• BOM is used in manufacturing to ensure all necessary materials are available for production.

• It includes details such as part numbers, quantities, and descriptions of each item.

• BOM can be hierarchical, with sub-assemblies listed under main assemblies.

• It helps in cost estimation, inventory management, ...read more
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Q2. Name a time you had conflict with a co worker and how did you resolve it
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Q1. Reserve Binary Search Tree
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Q1. Merge two sorted linked lists without using extra space
Ans. 
Merge two sorted linked lists without using extra space
• Use a dummy node to start the merged list

• Compare the values of the nodes in both lists and link the smaller one to the merged list

• Move the pointer of the merged list and the pointer of the smaller node to the next node
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Basic aptitude, c and data structures

Q1. C and data structures
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Q2. Operating system and puzzle
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Distance between two stations