rl544
41 lines
1.5 KiB
Java
41 lines
1.5 KiB
Java
// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/49994#
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import java.util.*;
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import java.lang.StringBuilder;
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class Solution {
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public int solution(String dirs) {
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int answer = 0;
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int[] pos = {0,0};
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char[] tt = {'L','R','U','D'};
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int[][] ppos = {{-1,0},{1,0},{0,1},{0,-1}};
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HashSet<String> hs = new HashSet<>();
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for(char a : dirs.toCharArray()){
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for(int x = 0; x < 4; x++){
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if(a == tt[x]) {
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if(Math.abs(pos[0]+ppos[x][0])<=5&&Math.abs(pos[1]+ppos[x][1])<=5) {
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StringBuilder sb = new StringBuilder();
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int aa = pos[0];
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int b = pos[1];
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pos[0] += ppos[x][0];
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pos[1] += ppos[x][1];
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if(aa > pos[0] || b > pos[1]){
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sb.append(aa);
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sb.append(pos[0]);
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sb.append(b);
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sb.append(pos[1]);
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} else{
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sb.append(pos[0]);
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sb.append(aa);
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sb.append(pos[1]);
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sb.append(b);
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}
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hs.add(sb.toString());
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//System.out.println(pos[0]+" "+pos[1]);
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}
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}
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}
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}
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return hs.size();
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}
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} |