rl544
76 lines
2.8 KiB
Java
76 lines
2.8 KiB
Java
// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/17679
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import java.util.*;
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class Solution {
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public int solution(int m, int n, String[] board) {
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int answer = 0, rlen = board.length, clen = board[0].length();
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Character[][] boa = new Character[rlen][clen];
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for(int a = 0; a < rlen; a++) boa[a] = board[a].chars().mapToObj(c -> (char)c).toArray(Character[]::new);
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while(true){
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Character[][] temp = new Character[rlen][clen];
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for(int a = 0; a < rlen; a++) {
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temp[a] = boa[a].clone();
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// System.out.println(Arrays.toString(temp[a])); //프린트해서 확인하기
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}
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HashSet<Integer> hs = new HashSet<>();
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boolean bigChk = false;
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for(int a = 0; a < rlen-1; a++){
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for(int b = 0; b < clen-1; b++){
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Character me = boa[a][b];
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boolean chk = true;
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for(int c = 0; c < 2; c++){
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for(int d = 0; d < 2; d++){
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if(c == 0 && d == 0) continue;
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if(me == ' ') {
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chk = false;
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break;
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}
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if(boa[a+c][b+d] != me) chk = false;
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}
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}
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if(chk) {
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bigChk = true;
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for(int c = 0; c < 2; c++){
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for(int d = 0; d < 2; d++){
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hs.add((a+c)*clen+b+d);
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}
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}
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}
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}
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}
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if(!bigChk) break;
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for(int set : hs){
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int r = set/clen, c = set%clen;
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temp[r][c] = ' ';
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answer++;
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}
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boa = trans(remove(trans(temp)));
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}
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return answer;
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}
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public Character[][] trans(Character[][] ob){
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Character[][] temp = new Character[ob[0].length][ob.length];
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for(int a = 0; a < ob.length; a++){
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for(int b = 0; b < ob[0].length; b++){
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temp[b][a] = ob[a][b];
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}
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}
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return temp;
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}
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public Character[][] remove(Character[][] temp){
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for(int a = 0; a < temp.length; a++){
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Arrays.sort(temp[a], new Comparator<Character>(){
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@Override
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public int compare(Character s1, Character s2){
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if(s1 == ' ' && s2 == ' ') return 0;
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else if(s1 == ' ' && s2 != ' ') return -1;
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else if(s1 != ' ' && s2 == ' ') return 1;
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else return 0;
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}
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});
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}
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return temp;
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}
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} |