rl544
34 lines
1.1 KiB
Java
34 lines
1.1 KiB
Java
// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/133502
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import java.util.*;
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class Solution {
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public int solution(int[] ingr) {
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int answer = 0;
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ArrayList<Integer> list = new ArrayList<>();
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ArrayList<Integer> list2 = new ArrayList<>();
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list2.add(1);
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list2.add(2);
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list2.add(3);
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list2.add(1);
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for (int i = 0; i < ingr.length; i++){
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list.add(ingr[i]);
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if(list.size() >= 4){
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ArrayList<Integer> list3 = new ArrayList<>();
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list3.add(list.get(list.size()-4));
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list3.add(list.get(list.size()-3));
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list3.add(list.get(list.size()-2));
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list3.add(list.get(list.size()-1));
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if(list3.equals(list2)){
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answer++;
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list.remove(list.size()-1);
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list.remove(list.size()-1);
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list.remove(list.size()-1);
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list.remove(list.size()-1);
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}
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}
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}
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return answer;
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}
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} |