Category: java
The Union-Find (Disjoint Set) is a commonly-used algorithm that can solve e.g. Minimal Spanning Tree. The following is a Java implementation of a Union-Find Class. package com.helloacm; public class …
In Java, you can usually remove items or entries with some specific value from Map or HashMap object using traditional method: public Map<String, String> removeItemByValue(Map<String, String> data, String value) …
Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string. Example 1: Input: num1 = “2”, num2 …
Given numBottles full water bottles, you can exchange numExchange empty water bottles for one full water bottle. The operation of drinking a full water bottle turns it into an …
Sometimes, you want the data to be accessed only once. For example, when the HTTP data stream is open for reading, once completed, you don’t want to expose the …