public class StringToNum{

  static long stringToNum(String rep, int base){
    
    long retVal=0;
    
    long placeVal=1;

    for (int i=rep.length()-1; i>=0; i--){
      retVal=retVal+placeVal* (rep.charAt(i) - '0');
      placeVal=placeVal*base;
    }

    return retVal;
  }


  public static void printConvert(String rep, int base){
    System.out.println(rep + " in base " + base +  " = " +
                       stringToNum(rep,base));
  }


  public static void main(String args[]){

    printConvert("11011011",2);
    printConvert("7103",8);
    printConvert("123",10);
    printConvert("123704",8);
    
  }

}
                       
/*
cd /home/bremner/teach/1083/lecture/L12/
java -Djava.compiler=NONE StringToNum

101 in base 2 = 5
101 in base 7 = 50
123 in base 10 = 123
123 in base 8 = 83

Process StringToNum finished

*/