Yemoo'S Java Blog — Tue, 05 Dec 2006 03:34:00 GMT

/**
*Description:convert Oct to Dec
*Author:yemoo 2006.12.05
*/

public class P38{
      int convertOct2Dec(String Oct){
          int result = 0 ;
          int power = 1 ;
          for ( int i = Oct.length() - 1 ;i >= 0 ;i -- ,power *= 8 ){
              char temp = Oct.charAt(i);
              int intTemp = Character.getNumericValue(temp);
              if (intTemp >= 0 && intTemp < 8 ){
                 result += intTemp * power;
             } else {
                  if (temp == ' - ' && i == 0 ){
                     result =- result;
                 } else {
                      return result;
                 }
             }
         }
          return result;
     }

     String readInput(){
         KeyboardInput in = new KeyboardInput();
         System.out.print( " Please input a october number: " );
          return in.readString();
     }

      public static void main(String args[]){
         P38 obj = new P38();
         String oct = obj.readInput();
          int value = obj.convertOct2Dec(oct);
         System.out.println( " Oct: " + oct + " ==Dec: " + value);
     }
}

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