[D2] Title: 날짜 계산기, Time: 83 ms, Memory: 24,576 KB -BaekjoonHub

Author: SHIMHUN

SWEA/D2/1948. 날짜 계산기/README.md

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+# [D2] 날짜 계산기 - 1948 
+
+[문제 링크](https://swexpertacademy.com/main/code/problem/problemDetail.do?contestProbId=AV5PnnU6AOsDFAUq) 
+
+### 성능 요약
+
+메모리: 24,576 KB, 시간: 83 ms, 코드길이: 1,525 Bytes
+
+### 제출 일자
+
+2025-10-23 19:05
+
+
+
+> 출처: SW Expert Academy, https://swexpertacademy.com/main/code/problem/problemList.do

SWEA/D2/1948. 날짜 계산기/날짜 계산기.java

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+import java.util.*;
+import java.io.*;
+
+class Solution
+{
+	public static void main(String args[]) throws IOException
+	{
+        Map<Integer, Integer> map = new HashMap<>();
+        map.put(1,31);
+        map.put(2,28);
+        map.put(3,31);    
+        map.put(4,30);
+        map.put(5,31);
+        map.put(6,30);
+        map.put(7,31);
+        map.put(8,31);
+        map.put(9,30);
+        map.put(10,31);
+        map.put(11,30);
+        map.put(12,31);
+        
+		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringBuilder sb = new StringBuilder();
+        int T = Integer.parseInt(br.readLine()); //테케 갯수
+        
+        for(int i = 1; i<=T; i++){
+            StringTokenizer st = new StringTokenizer(br.readLine());
+            int beforeMonth = Integer.parseInt(st.nextToken());
+            int beforeDate = Integer.parseInt(st.nextToken());
+            int afterMonth = Integer.parseInt(st.nextToken());
+            int afterDate = Integer.parseInt(st.nextToken());
+            
+            int count = 0;
+            
+            if(beforeMonth == afterMonth){ 
+                count = afterDate - beforeDate + 1;
+            }else{
+                for(int j=beforeMonth+1; j<afterMonth; j++){
+                	count += map.get(j);
+                }
+                
+                count+=map.get(beforeMonth)-beforeDate+1;
+                count+=afterDate;
+            }
+            
+            sb.append("#"+i+" "+count+"\n");
+        }
+        System.out.println(sb);
+	}
+}