[20250203] BOJ / 골드3 / 팰린드롬 / 김수연

Author: suyeun84

suyeun84/202502/03 BOJ G3 팰린드롬.md

@@ -0,0 +1,35 @@
+```java
+import java.util.*;
+import java.io.*;
+
+class Solution
+{
+	public static void main(String[] args) throws Exception{
+		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+		StringTokenizer st = new StringTokenizer(br.readLine());
+		
+		int N = Integer.parseInt(st.nextToken());
+		String target = br.readLine().trim();
+		String reverseTarget = "";
+		StringBuilder sb = new StringBuilder();
+		int[][] dp = new int[N+1][N+1];
+		for (int i = N-1; i > -1; i--) {
+			sb.append(target.charAt(i));
+		}
+		reverseTarget = sb.toString();
+		
+		for (int i = 1; i < N+1; i++) {
+			for (int j = 1; j < N+1; j++) {
+				if (target.charAt(i-1) != reverseTarget.charAt(j-1)) {
+					dp[i][j] = Math.max(dp[i][j-1], dp[i-1][j]);
+				} else {
+					dp[i][j] = dp[i-1][j-1] + 1;
+				}
+			}
+		}
+		
+		System.out.println(N-dp[N][N]);
+	}
+}
+
+```