m3hdiii

import java.util.LinkedHashSet;
import java.util.Set;

public class Test {
    public static void main(String[] args) {
        int[] arr = {4, 5, 7, -5 - 3, 2, 8, 5, -1, 3, 8};
        int[] distinctIntArray = makeDistinct(arr);
        getPairsCount(distinctIntArray, 9);
    }

m3hdiii

    <dependencies>

        <dependency>
            <groupId>javax.el</groupId>
            <artifactId>javax.el-api</artifactId>
            <version>2.2.4</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.web</groupId>

m3hdiii

public class Test {

    public static void main(String[] args) {
        String textWithsymbols = "Th!s is For $ & NoT 4 Honey ... !@#$?<>%^&Y~*()_-=+aah جاوا فور اور";

        String s = textWithsymbols.replaceAll("[\\\\s\\\\d!\\\"#$%&\\'()*+,-./:;\\\\\\\\<>=?@\\\\^_`{}|~\\\\[\\\\]]","");
        System.out.println(s);
    }
}