Software Engineer Interview Questions

Alex W. - "Memory allocation happens for storing a reference pointer as well as the default size of the generic object class depending on the language this is called in. Assuming this is in a JVM, this data is stored in metaspace, and memory allocation happens in heap."See full answer

Alessandro R. - "import java.util.*; public class NetworkTopology { public int topologytype(int N, int M, int[] input3, int[] input4) { if (M != N - 1 && M != N) return -1; // Fast check for invalid cases int[] degree = new int[N + 1]; // Degree of each node (1-based indexing) // Build the degree array for (int i = 0; i < M; i++) { degree[input3[i]]++; degree[input4[i]]++; } // Check for Bus Topology boolean isBus = (M"See full answer

Rudransh V. - "I got it right"See full answer

Kamlesh S. - "min-num = arr[0] max-num = arr[0] for (i=1; i max-num) { max-num = arr[i]; } } System.out.println("Minimum = " + min-num); System.out.println("Maximum = " + max-num);"See full answer

Sourav K. - "We can use a pool of memory where each index we can store the parent of current index then we can use same lca approach for array instead of pointers."See full answer

Luca D. - "Classes are represented in memory as areas where code and class shared objects are. The JVM use class loader to load classes and unload them if no more required at runtime as specified at https://docs.oracle.com/javase/specs/jls/se8/html/jls-12.html#jls-12.7, to name a very consolidated version of JVM. The interviewers supposed memory was freed without being subject to GC. I asked to discuss to clarify which hypothesis is right, the interviewers dismissed me. I'm very happy they didn't select m"See full answer

Anonymous Eel - "String commonStr(String str1, String str2) { int len1 = str1.length(); int len2 = str2.length(); if (len1 == 0 || len2 == 0) return ""; // let dpx reprsent the longest common str of 0...x int dp = new int len1 + 1; int maxLen = 0; int endIndex = 0; for (int i = 1; i <= len1; i++) { for (int j = 1; j <= len2; j++) { if (str1.charAt(i-1) == str2.charAt(j-1)) { dpi = dpi-1 + 1; "See full answer