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  1. package spoj;
  2.  
  3. import java.io.BufferedReader;
  4. import java.io.IOException;
  5. import java.io.InputStreamReader;
  6. //import java.util.Scanner;
  7. import java.util.StringTokenizer;
  8.  
  9. public class ACODE {
  10.  
  11. 	static class FastReader
  12.     {
  13.         BufferedReader br;
  14.         StringTokenizer st;
  15.  
  16.         public FastReader()
  17.         {
  18.             br = new BufferedReader(new
  19.                      InputStreamReader(System.in));
  20.         }
  21.  
  22.         String next()
  23.         {
  24.             while (st == null || !st.hasMoreElements())
  25.             {
  26.                 try
  27.                 {
  28.                     st = new StringTokenizer(br.readLine());
  29.                 }
  30.                 catch (IOException  e)
  31.                 {
  32.                     e.printStackTrace();
  33.                 }
  34.             }
  35.             return st.nextToken();
  36.         }
  37.  
  38.         int nextInt()
  39.         {
  40.             return Integer.parseInt(next());
  41.         }
  42.  
  43.         long nextLong()
  44.         {
  45.             return Long.parseLong(next());
  46.         }
  47.  
  48.         double nextDouble()
  49.         {
  50.             return Double.parseDouble(next());
  51.         }
  52.  
  53.         String nextLine()
  54.         {
  55.             String str = "";
  56.             try
  57.             {
  58.                 str = br.readLine();
  59.             }
  60.             catch (IOException e)
  61.             {
  62.                 e.printStackTrace();
  63.             }
  64.             return str;
  65.         }
  66.     }
  67.  
  68. 	public static int recursive (String s)
  69. 	{
  70. 		if (s.length()==1)
  71. 			{
  72. 			if (s.charAt(0)!='0')
  73. 				return 1;
  74. 			if (s.charAt(0)=='0')
  75. 				return 0;
  76. 			}
  77. 		if (s.length()==2)
  78. 		{
  79. 			int m = stringToInt(s);
  80. 			if (m>=10 && m<=26)
  81. 			{
  82. 			if (s.charAt(1)!='0')
  83. 				return 2;
  84. 			if (s.charAt(1)=='0')
  85. 				return 1;
  86. 			}
  87. 			if (m<10 && m>26)
  88. 				return 0;
  89. 		}
  90. 		int m = stringToInt(s.substring(0, 2));
  91. 		if (m<10)
  92. 			return 0;
  93. 		if (m>=10 && m<=26)
  94. 			return recursive(s.substring(1))+recursive(s.substring(2));
  95. 		return recursive(s.substring(1));
  96. 	}
  97.  
  98. 	public static int stringToInt(String s)
  99. 	{
  100. 		int numberAtTens = (int)(s.charAt(0))-48;
  101. 		int numberAtOnes = (int)(s.charAt(1))-48;
  102. 		return (10*numberAtTens)+numberAtOnes;
  103. 	}
  104.  
  105. 	public static void main(String[] args){
  106. 		// TODO Auto-generated method stub
  107. 		FastReader s=new FastReader();
  108. 		String input=s.next();
  109. 		while(!input.equals("0"))
  110. 		{
  111. 		System.out.println(recursive(input));
  112. 		input = s.next();
  113. 		if (input.equals("0"))
  114. 			break;
  115. 		}
  116. 	}
  117.  
  118. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
Main.java:9: error: class ACODE is public, should be declared in a file named ACODE.java
public class ACODE {
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/0LgFMz
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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