#35298 (Java) No.238 Mr. K's Another Gift

• 問題: No.238 Mr. K's Another Gift
• ユーザー: Grenache
• 提出日時: 2015-07-05 23:34:34
• 言語: Java (openjdk 23)
• 結果: AC
• 実行時間: 136 ms / 2,000 ms
• コード長: 3,558 bytes
• コンパイル時間: 3,256 ms
• コンパイル使用メモリ: 82,168 KB
• 実行使用メモリ: 45,132 KB
• 最終ジャッジ日時: 2024-07-08 00:30:04
• 合計ジャッジ時間: 8,222 ms
• ジャッジサーバーID （参考情報）: judge5 / judge2

ファイルパターン	結果
sample	AC * 3
other	AC * 40

ソースコード

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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.Iterator;
import java.util.Queue;
public class Main_yukicoder238 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Printer pr = new Printer(System.out);
        char[] s = sc.next().toCharArray();
        int n = s.length;
        Queue<Character> fq = new ArrayDeque<Character>();
        Queue<Character> rq = new ArrayDeque<Character>();
        boolean flag = false;
        for (int i = 0; i < n; i++) {
            if (!flag && s[i] != s[n - 1 - i]) {
                rq.add(s[i]);
                fq.add(s[n - 1 - i]);
                flag = true;
            }
            fq.add(s[i]);
            rq.add(s[n - 1 - i]);
        }
        if (!flag) {
            StringBuilder ret = new StringBuilder();
            int len = (n + 1) / 2;
            for (int i = 0; i < len; i++) {
                ret.append(s[i]);
            }
            ret.append(s[len - 1]);
            for (int i = len; i < n; i++) {
                ret.append(s[i]);
            }
            
            pr.println(ret);
        } else {
            Character[] tmp = new Character[0];
            tmp = fq.toArray(tmp);
            boolean res = true;
            for (int i = 0; i < tmp.length; i++) {
                if (tmp[i] != tmp[tmp.length - 1 - i]) {
                    res = false;
                    break;
                }
            }
            
            if (res) {
                StringBuilder ret = new StringBuilder();
                for (int i = 0; i < tmp.length; i++) {
                    ret.append(tmp[i]);
                }
                
                pr.println(ret);
                pr.close();
                sc.close();
                
                return;
            }
            Character[] tmp2 = new Character[0];
            tmp2 = rq.toArray(tmp2);
            boolean res2 = true;
            for (int i = 0; i < tmp2.length; i++) {
                if (tmp2[i] != tmp2[tmp2.length - 1 - i]) {
                    res2 = false;
                    break;
                }
            }
            
            if (res2) {
                StringBuilder ret = new StringBuilder();
                for (int i = 0; i < tmp2.length; i++) {
                    ret.append(tmp2[i]);
                }
                
                pr.println(ret);
            } else {
                pr.println("NA");
            }
        }
        pr.close();
        sc.close();
    }
    @SuppressWarnings("unused")
    private static class Scanner {
        BufferedReader br;
        Iterator<String> it;
        
        Scanner (InputStream in) {
            br = new BufferedReader(new InputStreamReader(in));
        }
        
        String next() throws RuntimeException  {
            try {
                if (it == null || !it.hasNext()) {
                    it = Arrays.asList(br.readLine().split(" ")).iterator();
                }
                return it.next();
            } catch (IOException e) {
                throw new IllegalStateException();
            }
        }
        
        int nextInt() throws RuntimeException {
            return Integer.parseInt(next());
        }
        long nextLong() throws RuntimeException {
            return Long.parseLong(next());
        }
        float nextFloat() throws RuntimeException {
            return Float.parseFloat(next());
        }
        double nextDouble() throws RuntimeException {
            return Double.parseDouble(next());
        }
        void close() {
            try {
                br.close();
            } catch (IOException e) {
//              throw new IllegalStateException();
            }
        }
    }
    private static class Printer extends PrintWriter {
        Printer(PrintStream out) {
            super(out);
        }
    }
}
 
 
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