import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.math.BigInteger;
public class Main {
public static void main(String[] args) throws Exception {
BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
BigInteger a = new BigInteger(bf.readLine());
if (check(a)) {
out.println(a + " is a palindromic number.");
} else {
BigInteger b = reverse(a);
boolean f = true;
for (int i = 0; i < 10; i++) {
BigInteger c = a.add(b);
out.println(a + " + " + b + " = " + c);
if (check(c)) {
out.print(c + " is a palindromic number.");
f = false;
break;
}
a = c;
b = reverse(c);
}
if (f) {
out.print("Not found in 10 iterations.");
}
}
out.flush();
}
static BigInteger reverse(BigInteger a) {
String t = a.toString();
String r = "";
for (int i = 0; i < t.length(); i++) {
r = t.charAt(i) + r;
}
return new BigInteger(r);
}
static boolean check(BigInteger a) {
String t = a.toString();
for (int i = 0; i < t.length() / 2; i++) {
if (t.charAt(i) != t.charAt(t.length() - 1 - i))
return false;
}
return true;
}
}
PAT_B_1079_Java(20分)
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转载自blog.csdn.net/qq_43511405/article/details/107432522
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