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The head ref may contain hidden characters: "sollyj_\uD1F4\uC0AC"
Merged
정솔리: 퇴사 #68
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| // Programmers_도둑질 | ||
| package sollyj.week4; | ||
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| public class 도둑질 { | ||
| public static void main(String[] args) { | ||
| System.out.println(solution(new int[] {1, 2, 3, 1})); | ||
| } | ||
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| private static int solution(int[] money) { | ||
| int answer = 0; | ||
| int len = money.length; | ||
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| // 1. n번째 집을 털었을때 훔친 돈의 최댓값이 들어갈 배열 선언 | ||
| int[] dp_first = new int[len]; // 첫번째 집을 터는 경우 | ||
| int[] dp_second = new int[len]; // 첫번째 집을 안 터는 경우 | ||
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| // 2. 배열 초기값 | ||
| for (int i = 0; i < len; i++) { | ||
| dp_first[i] = money[i]; | ||
| dp_second[i] = money[i]; | ||
| } | ||
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| dp_first[1] = -1; // 두번째집 안털기 | ||
| dp_second[0] = -1; // 첫번째집 안털기 | ||
| dp_first[2] += dp_first[0]; // 집의 개수는 최소 3개이므로, dp_first[2]의 초기값도 넣어준다. | ||
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| // 3. 점화식 | ||
| for (int i = 3; i < len; i++) { | ||
| // 인접하지 않은 집(i - 2, i - 3)과 비교해 더 큰 값을 누적해 더해줌 | ||
| dp_first[i] += Math.max(dp_first[i - 3], dp_first[i - 2]); | ||
| dp_second[i] += Math.max(dp_second[i - 3], dp_second[i - 2]); | ||
| } | ||
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| // 맨 마지막 두집을 비교하여 최댓값 찾기 | ||
| int first_max = Math.max(dp_first[len - 2], dp_first[len - 3]); // 첫번째 집을 털었으니까 맨 마지막 집은 어차피 못 턴다. | ||
| int second_max = Math.max(dp_second[len - 1], dp_second[len - 2]); // 첫번째 집을 안 털었으니까 맨 마지막 집 털 수 있다. | ||
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| answer = Math.max(first_max, second_max); | ||
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| return answer; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| // Baekjoon_14501_퇴사 | ||
| package sollyj.week4; | ||
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| import java.io.BufferedReader; | ||
| import java.io.InputStreamReader; | ||
| import java.util.StringTokenizer; | ||
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| public class 퇴사 { | ||
| public static void main(String[] args) { | ||
| try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) { | ||
| StringTokenizer st; | ||
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| int N = Integer.parseInt(br.readLine()); | ||
| int[] T = new int[N]; // 상담 기간 | ||
| int[] P = new int[N]; // 금액 | ||
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| // 1. 테이블 정의 | ||
| // n일까지의 최대 수익 | ||
| int[] profit_max = new int[N + 1]; | ||
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| // 2. 초기값 세팅 | ||
| for (int i = 0; i < N; i++) { | ||
| st = new StringTokenizer(br.readLine()); | ||
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| T[i] = Integer.parseInt(st.nextToken()); | ||
| P[i] = Integer.parseInt(st.nextToken()); | ||
| } | ||
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| // 3. 점화식 | ||
| for(int i = 0; i < N; i++) { | ||
| if(i + T[i] <= N) { // i일에 상담을 했을때 퇴사일 까지 상담을 마칠수 있다면 | ||
| // profit_max[i + T[i]]: 현재 값 | ||
| // profit_max[i] + P[i]: i일에 상담을 했을 때 수익 | ||
| profit_max[i + T[i]] = Math.max(profit_max[i + T[i]], profit_max[i] + P[i]); | ||
| } | ||
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| // 예외 (예제 입력4 같은 경우) | ||
| // 꼭 i + T[i]만 상담 할 수 있는 것은 아니고, 상담 다음날 상담을 할 수도 있는 것이다. | ||
| profit_max[i + 1] = Math.max(profit_max[i], profit_max[i + 1]); | ||
|
Member
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. solly's 예외 설명 아주 좋아요 |
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| } | ||
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| // 4. 답 도출 | ||
| System.out.println(profit_max[N]); | ||
| } catch (Exception e) { | ||
| System.out.println(e.getLocalizedMessage()); | ||
| } | ||
| } | ||
| } | ||
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solly`s 점화식이란...