[김정호]꽉 자바 첫 주 코테 풀이 프로그래머스 340211번 문제

Author: Unoguna

.idea/.name

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+package week01.Unoguna;
+
+public class PG_340211 {
+
+    public static void main(String[] args){
+        int[][] points = new int[][]{{3, 2}, {6, 4}, {4, 7}, {1, 4}};
+        int[][] routes = new int[][]{{4, 2}, {1, 3}, {2, 4}};
+
+        Solution s = new Solution();
+
+        System.out.println(s.solution(points, routes));
+    }
+
+    public static class Solution {
+        class Robot{
+            int x;
+            int y;
+
+            int location_x;
+            int location_y;
+
+            int[] route;
+            int route_idx;
+
+            boolean end;
+
+            Robot(int[] route, int x, int y, int location_x, int location_y){
+                route_idx = 1;
+                this.route = route;
+                this.x = x;
+                this.y = y;
+                this.location_x = location_x;
+                this.location_y = location_y;
+                this.end = false;
+            }
+        }
+
+        public int solution(int[][] points, int[][] routes) {
+            int answer = 0;
+            int end_num = 0;
+
+            int[][] matrix = new int[101][101];
+
+            Robot[] robot = new Robot[routes.length];
+
+            for(int i=0; i<routes.length; i++){
+                int point_idx = routes[i][0] - 1;
+                int location_idx = routes[i][1] - 1;
+                robot[i] = new Robot(routes[i], points[point_idx][1], points[point_idx][0],
+                        points[location_idx][1], points[location_idx][0]);
+            }
+
+            while(end_num < routes.length){
+                //현재 반영
+                for(int i=0; i<robot.length; i++){
+                    if(robot[i].end) continue;
+
+                    int x = robot[i].x;
+                    int y = robot[i].y;
+
+                    matrix[y][x]++;
+                }
+
+                //count 체크
+                for(int i=0; i<matrix.length; i++){
+                    for(int j=0; j<matrix.length; j++){
+                        if(matrix[j][i] > 1) answer++;
+                        matrix[j][i] = 0;
+                    }
+                }
+
+                //다음 동작
+                for(int i=0; i<robot.length; i++){
+                    if(robot[i].end) continue; //동작을 다 한 로봇
+
+                    if(robot[i].x == robot[i].location_x && robot[i].y == robot[i].location_y){
+                        if(robot[i].route_idx + 1 == robot[i].route.length){
+                            end_num++;
+                            robot[i].end=true;
+                            continue;
+                        }
+
+                        //다음 location할당
+                        robot[i].route_idx++;
+                        int idx = robot[i].route[robot[i].route_idx];
+
+
+                        robot[i].location_y = points[idx-1][0];
+                        robot[i].location_x = points[idx-1][1];
+                    }
+                    if(robot[i].y != robot[i].location_y){
+                        //세로 움직
+                        robot[i].y += robot[i].y > robot[i].location_y ? -1 : 1;
+                    }
+                    else{
+                        //가로 움직
+                        robot[i].x += robot[i].x > robot[i].location_x ? -1 : 1;
+                    }
+                }
+            }
+
+            return answer;
+        }
+    }
+}