2024-09-27

tgyuuAn/README.md

@@ -83,4 +83,5 @@
 | 74차시 | 2024.08.30 |  BFS  | <a href="https://www.acmicpc.net/problem/11967">불 켜기</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/242
 | 75차시 | 2024.09.02 |  DP  | <a href="https://school.programmers.co.kr/learn/courses/30/lessons/258705">산 모양 타일링</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/243
 | 76차시 | 2024.09.06 |  DFS + 트리  | <a href="https://school.programmers.co.kr/learn/courses/30/lessons/150367">표현 가능한 이진트리</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/246
+| 77차시 | 2024.09.27 |  구현  | <a href="https://school.programmers.co.kr/learn/courses/30/lessons/150366">표 병합</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/247
 ---

tgyuuAn/구현/표 병합.py

@@ -0,0 +1,101 @@
+from collections import defaultdict
+
+def solution(commands):
+    table = [[None for _ in range(52)] for _ in range(52)]
+    linked_dict = defaultdict(set)
+    value_dict = defaultdict(set)
+    answer = []
+
+    for command in commands:
+        splt = command.split()
+        length = len(splt)
+        query = splt[0]
+
+        if query == "UPDATE":            
+            if(length == 3):
+                value1, value2 = splt[1], splt[2]
+
+                temp = set()
+                for (r, c) in value_dict[value1]:
+                    table[r][c] = value2
+                    temp.add((r,c))
+
+                value_dict[value1] = set()
+                value_dict[value2].update(temp)
+
+            elif(length == 4):
+                r, c, value1 = int(splt[1]), int(splt[2]), splt[3]
+
+                origin = table[r][c]         
+                if len(linked_dict[(r,c)]) == 0:
+                    table[r][c] = value1
+                    value_dict[value1].add((r,c))
+                    if origin is not None: value_dict[origin].discard((r,c))
+
+                else:
+                    for (l_r, l_c) in linked_dict[(r,c)]:
+                        if origin is not None: value_dict[origin].discard((l_r, l_c))
+                        table[l_r][l_c] = value1
+
+                    value_dict[value1].update(linked_dict[(r,c)])
+
+        elif query == "MERGE":
+            r1, c1, r2, c2 = int(splt[1]), int(splt[2]), int(splt[3]), int(splt[4])
+
+            if((r1, c1) == (r2, c2)): continue
+            value1 = table[r1][c1]
+            value2 = table[r2][c2]
+            merge_value = None
+            if value1 is not None and value2 is not None:
+                merge_value = value1
+
+            elif value1 is not None:
+                merge_value = value1
+
+            elif value2 is not None:
+                merge_value = value2
+
+            all_element = {(r1, c1), (r2, c2)}
+
+            value1_element = {(r1, c1)} | linked_dict[(r1, c1)]
+            value2_element = {(r2, c2)} | linked_dict[(r2, c2)]
+            all_element = value1_element | value2_element
+
+            if value1 is None and value2 is not None:
+                for (el_r, el_c) in value1_element:
+                    table[el_r][el_c] = merge_value
+
+                    value_dict[value2].add((el_r, el_c))
+
+            if not(value1 is None and value2 is None):
+                for (el_r, el_c) in value2_element:
+                    table[el_r][el_c] = merge_value
+
+                    if value1 is not None and value2 is not None:
+                        value_dict[value2].discard((el_r, el_c))
+                        value_dict[value1].add((el_r, el_c))
+
+                    elif value1 is not None:
+                        value_dict[value2].discard((el_r, el_c))
+                        value_dict[value1].add((el_r, el_c))
+
+            for (l_r, l_c) in all_element:
+                linked_dict[(l_r, l_c)] = all_element
+
+        elif query =="UNMERGE":
+            r, c = int(splt[1]), int(splt[2])
+            value1 = table[r][c]
+            value_dict[value1] -= linked_dict[(r, c)]
+
+            for (now_r, now_c) in linked_dict[(r, c)]:
+                linked_dict[(now_r, now_c)] = set()
+                table[now_r][now_c] = None
+
+            table[r][c] = value1
+            value_dict[value1].add((r,c))
+
+        elif query =="PRINT":
+            r, c = int(splt[1]), int(splt[2])
+            answer.append(table[r][c] if table[r][c] is not None else "EMPTY")
+
+    return answer