aryan-dixit-26

import java.util.*;

class Pair {
    int x;
    int y;

    @Override
    public String toString() {
        return "{" +
                "x=" + x +

aryan-dixit-26

import java.util.HashMap;
import java.util.Map;

class Question2 {
    public static final int MAX_UNICODE = 65_535;

    public static void main(String[] args) {
        System.out.println(checkWhetherStringIsUnique("Competitive Programming"));
    }

aryan-dixit-26

import java.util.HashMap;
import java.util.Map;

class Duplicates {
    public static Map<Character, Integer> countDuplicateCharacters(String string) {
        var resultMap = new HashMap<Character, Integer>();

        for (int i = 0; i < string.length(); i++) {
            int c = 0;
            if(!Character.isWhitespace(string.charAt(i)))