Java CheatSheet
Sorting Arrays.sort() Array Type Algorithm Average Time Worst Time Space Stable In-Place Primitives (int[], double[], etc.) Dual-Pivot Quicksort O(n log n) O(n²) O(log n) ❌ No ✅ Yes Objects (String[], Integer[], custom classes) TimSort O(n log n) O(n log n) O(n) ✅ Yes ❌ No Data Structures Queue A Queue in Java is a FIFO […]