import java.util.*;class Solution { public ArrayList solution(int[] num_list, int n) { ArrayList answer = new ArrayList(); for(int i=n-1;i

import java.util.*;class Solution { public ArrayList solution(String[] str_list) { ArrayList answer = new ArrayList(); int l = Arrays.asList(str_list).indexOf("l"); int r = Arrays.asList(str_list).indexOf("r"); if(l==-1 && r==-1 ) return answer; if(l==0 && r==str_list.length) return answer; if(r==-1 ||(l=0) ){ for(in..

import java.util.*;class Solution { public ArrayList solution(int[] num_list, int n) { ArrayList answer = new ArrayList(); ArrayList start = new ArrayList(); for(int i=0;i  두개의 ArrayList 합치기addAll() 메소드 사용

import java.util.*;class Solution { public ArrayList solution(int[] arr, int[][] intervals) { ArrayList answer = new ArrayList(); for(int i=intervals[0][0]; i

import java.util.*;class Solution { public ArrayList solution(int[] arr) { ArrayList answer = new ArrayList(); ArrayList cnt = new ArrayList(); for(int i=0;i=2){ int s = cnt.get(0); int e = cnt.get(cnt.size()-1); for(int i=s;i

import java.util.*;class Solution { public String solution(String my_string, int[] indices) { StringBuilder sb = new StringBuilder(my_string); Arrays.sort(indices); for (int i = indices.length - 1; i >= 0; i--) { sb.deleteCharAt(indices[i]); } return sb.toString(); }}  String은 변경 불가능한 문자열을 생성하지만, StringBuilder는 변경 가능한 문자열을 만들어 주..

import java.util.*;class Solution { public String solution(String my_string, int m, int c) { ArrayList t = new ArrayList(); String answer = ""; for(int i=0;i

import java.util.*;class Solution { public ArrayList solution(int n, int k) { ArrayList answer = new ArrayList(); for(int i=1;i