kninami

import java.util.*;

class Solution {
    public int solution(int[] A) {
        
        Map<Integer,Integer> matchMap = new HashMap<Integer,Integer>();
        int unPaired = 0;
        
        for(int i=0;i<A.length;i++){
            int value = matchMap.get(A[i])==null?0:matchMap.get(A[i]);

kninami

import java.util.*;
import java.lang.*;
import java.util.Arrays;

class Solution {
    public int solution(int N) {
        int N3 = 1;
        String bina = Integer.toBinaryString(N);
        String pro[] = bina.split("0");
        int[] score = new int[pro.length];

kninami

import java.util.ArrayList;

class Solution{
    public int solution(int N){
        ArrayList<Integer> array = new ArrayList<Integer>();
        
        int count = 0;
        int max = 0;
        boolean flag = false;