function solution(n) {
    return parseInt(n.toString(3).split('').reverse().join(''),3)
}

function solution(numbers) {
    var answer = [];
    
    for( var i=0 ; i<numbers.length-1 ; i++){
        for( var y=i+1 ; y<numbers.length ; y++){
            if( answer.indexOf( numbers[i]+numbers[y] ) == -1){
                answer.push( numbers[i]+numbers[y] );    
            }
            
        }
    }
    answer = answer.sort(function(a,b){
        return a-b
    });

    return answer;
}

function solution(numbers) {
    const temp = []

    for (let i = 0; i < numbers.length; i++) {
        for (let j = i + 1; j < numbers.length; j++) {
            temp.push(numbers[i] + numbers[j])
        }
    }

    const answer = [...new Set(temp)]

    return answer.sort((a, b) => a - b)
}

function solution(a, b) {
     var answer = '';
    
     let day = new Date(`2016-${a}-${b}`);
     const WEEKDAY = ['SUN', 'MON', 'TUE', 'WED', 'THU', 'FRI', 'SAT'];
     let week = WEEKDAY[day.getDay()];
    
      return week;
};

function solution(s) {
   var answer = '';
   var center = Math.ceil( (s.length/2)-1 );
    if( s.length%2==0){
        answer = s.substring( center , center+2 )
    }else{
        answer = s.substring( center , center+1 )
    }
    return answer;
}

/*
처음에는 이렇게 풀었지만 굳이 01001을 또 짤라서 비교햘 필요 없어서
solution2으로 다시
*/
function solution1(n, arr1, arr2) {
    arr1 = arr1.map(function(data){
        return (data.toString(2)).padStart(n,0).split('')
    })
    arr2 = arr2.map(function(data){
        return (data.toString(2)).padStart(n,0).split('')
    })
    var onepice;
    onepice = arr1.map(function(data,index){
        return data.map(function( num , idx ){
            return Math.max( num , arr2[index][idx] ) == 1 ? "#" : " "; 
        }).join('')
    });
    return onepice;
}

/*
다시 품
*/
function solution2(n, arr1, arr2) {
    return arr1.map(function(data , index ){
        return (data|arr2[index]).toString(2).padStart(n,0).replace(/0/g,' ').replace(/1/g,'#')
    })
}