Tomcat Devs

Most Frequent Element ◐ Java · DSA · Hashing Most frequent element — from O(N²) to O(N) , pointer by pointer Three ways to find the element that appears most often: brute force, array hashing and a HashMap. Each approach has an animated tracer, the two common bugs are shown as they happen, and the complexity is worked out correctly. 01 Problem 02 Brute force 03 Array hashing 04 Complexity 05 HashMap 06 Revision 07 Quiz 01 The problem Given an array of N integers, print the element that appears most often. For [1, 3, 2, 3, 1, 3] the answer is 3 , which appears 3 times. Type any array to run every version at once. Some presets are chosen to break one of them. Array (spaces or commas) Run all 02 Approach 1: Brute force For every index i , scan the whole array with j and count how often arr[i] appears. Keep the best count. ...