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๋ชฉ๋กHashMap (3)
It's easy, if you try
๋ฌธ์ https://programmers.co.kr/learn/courses/30/lessons/72411?language=java ์ฝ๋ฉํ ์คํธ ์ฐ์ต - ๋ฉ๋ด ๋ฆฌ๋ด์ผ ๋ ์คํ ๋์ ์ด์ํ๋ ์ค์นดํผ๋ ์ฝ๋ก๋19๋ก ์ธํ ๋ถ๊ฒฝ๊ธฐ๋ฅผ ๊ทน๋ณตํ๊ณ ์ ๋ฉ๋ด๋ฅผ ์๋ก ๊ตฌ์ฑํ๋ ค๊ณ ๊ณ ๋ฏผํ๊ณ ์์ต๋๋ค. ๊ธฐ์กด์๋ ๋จํ์ผ๋ก๋ง ์ ๊ณตํ๋ ๋ฉ๋ด๋ฅผ ์กฐํฉํด์ ์ฝ์ค์๋ฆฌ ํํ๋ก ์ฌ๊ตฌ์ฑํด์ programmers.co.kr ํ์ด import java.util.*; class Solution { static HashMap hm; public String[] solution(String[] orders, int[] course) { hm = new HashMap(); for(String o: orders) { char[] order = o.toCharArr..
Map map = new HashMap(); map.put("a", 3); map.put("b", 2); map.put("c", 1); List entryList = new LinkedList(map.entrySet()); entryList.sort(((o1, o2) -> map.get(o1.getKey()) - map.get(o2.getKey()))); for(Map.Entry entry : entryList){ System.out.println("key : " + entry.getKey() + ", value : " + entry.getValue()); } //key : c, value : 1 //key : b, value : 2 //key : a, value : 3
๋ฌธ์ 1755๋ฒ: ์ซ์๋์ด 79๋ฅผ ์์ด๋ก ์ฝ๋ ์ซ์ ๋จ์๋ก ํ๋์ฉ ์ฝ๋๋ค๋ฉด "seven nine"์ด ๋๋ค. 80์ ๋ง์ฐฌ๊ฐ์ง๋ก "eight zero"๋ผ๊ณ ์ฝ๋๋ค. 79๋ 80๋ณด๋ค ์์ง๋ง, ์์ด๋ก ์ซ์ ํ๋์ฉ ์ฝ๋๋ค๋ฉด "eight zero"๊ฐ "seven nine"๋ณด๋ค ์ฌ์ ์์ผ๋ก www.acmicpc.net ํ์ด import java.util.*; import java.io.*; public class Main { // class ์์ static BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); // ์ ๋ ฅ ํ์ค ๋ฐ์์ค๊ธฐ static BufferedWriter bw = new BufferedWriter(new OutputStr..