Qualcomm Software Development Test Engineer interview questions

WAP to find height of BST WAP to find absolute difference between sum of two diagonals of square matrix. WAP to find factorial in recursive and show stack trace, explain about head and tail recursion WAP to find some of 10 elements in recursive and show stack trace Given two arrays such that first array has only one element which is not in second array, WAP to find that element (O(n) solution was needed) WAP to sort array of 10 strings elements in python WAP which will count and print number of lines in program (python/shell) Write command for find the occurrence of particular string in directory , also how to search that in specific file types (I wrote about grep and spoke about find and locate)  Asked about few git commands , sample commands to commit the changes Lot of questions about work experience and CV How thermal management work in mobile platforms? Explain android architecture in brief About the open source contribution I have done, how big was that? Five interviews + HR Round over telephone.