Algorithms to Check if Array Contains Duplicate Elements
Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it …
Tag: hash set
Design a Logger Rate Limiter in C++/Java
Design a logger system that receive stream of messages along with its timestamps, each message should be printed if and only if it is not printed in the last …
Algorithms: How to Find N-Repeated Element in Size 2N Array?
January 19, 2019
algorithms, data structure, Java, java, List / Array, programming languages
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In a array A of size 2N, there are N+1 unique elements, and exactly one of these elements is repeated N times. Return the element repeated N times. Example …
Finding Two Numbers of Given Sum in Binary Search Tree
Given a binary search tree and a target, find out if there are any two numbers in the BST that sums up to this target. Given a Binary Search …
How to Filter the Unique Email Addresses?
Same Email addresses can have different forms for example, in the format of “username@domain” – the username part can have the optional dots to separate. The following email addresses …