Java DSA cheatsheet

Data Structures 1. Arrays int[] arr = new int[10]; arr[1] = 34; arr[1] = 35; int i = arr[1]; int size = arr.length; // Fill array with a value Arrays.fill(arr, -1); // Sort Arrays.sort(arr); // Ascending Arrays.sort(arr, (a, b) -> b - a); // Desce...