java-arrays-as-sets

Usage

Intersection

import static io.hexlet.utils.ArraysAsSets;

String[] firstNames = {"Vasya", "Kolya", "Petya"};
String[] secondNames = {"Igor", "Petya", "Sergey", "Vasya", "Sasha"};

intersection(firstNames, secondNames);
// ["Vasya", "Petya"]

Union

import static io.hexlet.utils.ArraysAsSets;

String[] firstNames = {"Vasya", "Kolya", "Petya"};
String[] secondNames = {"Igor", "Petya", "Sergey", "Vasya", "Sasha"};

union(firstNames, secondNames);
// ["Petya", "Sasha", "Igor", "Kolya", "Vasya", "Sergey"]

Difference

import static io.hexlet.utils.ArraysAsSets;

String[] firstNames = {"Vasya", "Kolya", "Petya"};
String[] secondNames = {"Igor", "Petya", "Sergey", "Vasya", "Sasha"};
difference(firstNames, secondNames);
// ["Kolya"]

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