map

문제 설명https://school.programmers.co.kr/learn/courses/30/lessons/42579   제한 사항   입출력 예   풀이import java.util.PriorityQueue;import java.util.ArrayList;import java.util.HashMap;import java.util.Comparator;import static java.util.Map.Entry;import static java.util.AbstractMap.SimpleEntry;class Solution { public int[] solution(String[] genres, int[] plays) { ArrayList answer = new ArrayList();..

문제 설명https://school.programmers.co.kr/learn/courses/30/lessons/258709   제한 사항   입출력 예   풀이import java.util.List;import java.util.ArrayList;import java.util.Map;import java.util.HashMap;import java.util.PriorityQueue;import static java.util.Map.Entry;class Solution { int[] answer = {}; int max = 0; public int[] solution(int[][] dice) { selectDices(new ArrayList(), dice, -1, di..

문제 설명https://school.programmers.co.kr/learn/courses/30/lessons/250136   제한 사항   입출력 예   풀이import java.util.HashMap;import java.util.ArrayList;class Solution { private ArrayList checkedLandList = new ArrayList(); public int solution(int[][] land) { HashMap landMap = new HashMap(); int answer = 0; for (int n = 0; n linkedLandList = new ArrayList(); ..

문제 설명https://school.programmers.co.kr/learn/courses/30/lessons/154540 제한 사항 입출력 예 풀이import java.util.ArrayList;import java.util.Map;import java.util.HashMap;class Solution { private HashMap nodeMap = new HashMap(); private int sum; public int[] solution(String[] maps) { ArrayList answer = new ArrayList(); int y = 1; for (String map : maps) { i..

문제 설명https://school.programmers.co.kr/learn/courses/30/lessons/155651 제한 사항 입출력 예 풀이import java.util.HashMap;import java.util.Arrays;class Solution { public int solution(String[][] book_time) { HashMap roomMap = new HashMap(); Arrays.sort(book_time, (arr1, arr2) -> Integer.parseInt(arr1[0].replaceFirst(":", "")) - Integer.pars..

문제 설명 https://school.programmers.co.kr/learn/courses/30/lessons/120876 제한 사항 입출력 예 풀이 import java.util.HashMap; import java.util.stream.Collectors; class Solution { public int solution(int[][] lines) { HashMap numMap = new HashMap(); for (int i = 0; i < lines.length; i++) for (int j = lines[i][0]; j < lines[i][1]; j++) numMap.put(j, numMap.getOrDefault(j, 0) + 1); return numMap.values().stream()..