#46413 (Java) No.273 回文分解

• 問題: No.273 回文分解
• ユーザー: holeguma
• 提出日時: 2015-08-29 19:58:04
• 言語: Java (openjdk 23)
• 結果: AC
• 実行時間: 55 ms / 2,000 ms
• コード長: 2,524 bytes
• コンパイル時間: 2,194 ms
• コンパイル使用メモリ: 78,904 KB
• 実行使用メモリ: 50,408 KB
• 最終ジャッジ日時: 2024-06-25 13:27:55
• 合計ジャッジ時間: 5,081 ms
• ジャッジサーバーID （参考情報）: judge3 / judge5

ファイルパターン	結果
sample	AC * 3
other	AC * 32

ソースコード

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import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Deque;
import java.util.HashMap;
import java.util.InputMismatchException;
import java.util.Map;
import java.util.PriorityQueue;
import java.math.BigInteger;
    
public class Main{
static final InputStream in=System.in;
static final PrintWriter out=new PrintWriter(System.out);
static final int INF=Integer.MAX_VALUE/2;
static final long LINF=Long.MAX_VALUE/2;
static String str;
public static void main(String[] args) throws IOException{
InputReader ir=new InputReader(in);
str=ir.next();
int ans=0;
for(int i=0;i<str.length();i++){
for(int j=i;j<str.length();j++){
if(i==0&&j==str.length()-1) continue;
if(isPalindrome(i,j)) ans=Math.max(ans,j-i+1);
}
}
out.println(ans);
out.flush();
}
public static boolean isPalindrome(int s,int e){
for(int i=0;i<=(e-s)/2;i++) if(str.charAt(s+i)!=str.charAt(e-i)) return false;
return true;
}
static class InputReader {
private InputStream in;
private byte[] buffer=new byte[1024];
private int curbuf;
private int lenbuf;
public InputReader(InputStream in) {this.in=in;}
  
public int readByte() {
if(lenbuf==-1) throw new InputMismatchException();
if(curbuf>=lenbuf){
curbuf= 0;
try{
lenbuf=in.read(buffer);
}
catch (IOException e) {
throw new InputMismatchException();
}
if(lenbuf<=0)
return -1;
}
return buffer[curbuf++];
}
public boolean isSpaceChar(int c){return !(c>=33&&c<=126);}
private int skip() {int b; while((b = readByte())!=-1&&isSpaceChar(b)); return b;}
public String next() {
int b=skip();
StringBuilder sb=new StringBuilder();
while(!isSpaceChar(b)){
sb.appendCodePoint(b);
b=readByte();
}
return sb.toString();
}
 
public int nextInt() {
int c=readByte();
while (isSpaceChar(c)) c=readByte();
boolean minus=false;
if (c=='-') {
minus=true;
c=readByte();
}
int res=0;
do{
if(c<'0'||c>'9') throw new InputMismatchException();
res=res*10+c-'0';
c=readByte();
}while(!isSpaceChar(c));
return (minus)?-res:res;
}
public long nextLong() {
int c=readByte();
while (isSpaceChar(c)) c=readByte();
boolean minus=false;
if (c=='-') {
minus=true;
c=readByte();
}
long res = 0;
do{
if(c<'0'||c>'9') throw new InputMismatchException();
res=res*10+c-'0';
c=readByte();
}while(!isSpaceChar(c));
return (minus)?-res:res;
}
public int[] toIntArray(int n){
int[] a=new int[n];
for(int i=0;i<n;i++) a[i]=nextInt();
return a;
}
}
}
 
 
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