๐Ÿ—๏ธ Algorithm/โฌ› ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค

โฌ› [Programmers] [Java] [Level2] ์ ํ”„์™€ ์ˆœ๊ฐ„์ด๋™

Dbswnstjd 2024. 1. 16. 17:38

๋ฌธ์ œ

https://school.programmers.co.kr/learn/courses/30/lessons/12980?language=java

 

ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค

์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.

programmers.co.kr

ํ’€์ด

import java.util.*;

public class Solution {
    public int solution(int n) {
        int ans = 0;
        
        while(n != 0){
            if(n % 2 == 0){
                n /= 2;
            } else {
                n--;
                ans++;
            }
        }

        return ans;
    }
}