Hi,
I am looking for the following..
Given an input
for example a
it shud generate..the following codes
a.1
b
Given a.1 it shud generate
a.1.a
a.2
b
Given a.10.a.1.c.a
it shud gerenate
a.10.a.1.c.a.1
a.10.a.1.c.b
a.10.a.1.d
a.10.a.2
a.10.b
a.11
b
i hope u get the idea//
it wud be nice if u cud give some inputs..
thanks
(alphabets and digits alternate)..always starts with alphabet..
static ArrayList codeGen(String st)
{
int idx=0;
String sub="";
int len;
String s="";
ArrayList output=new ArrayList();
if(st.length()==1) s=st+"."+"0";
else s=st;
System.out.println("the length is"+s.length());
for(int i=s.length()-1;i>=0;i--)
{
idx=s.lastIndexOf(".");
if(idx==-1) {char c1=(char)(s.charAt(0)+1);System.out.println("comes here"+c1);output.add(c1+"");return output;}
sub=s.substring(idx+1);
System.out.println("the string sub is"+sub);
len=sub.length();
if(len==1)
{
char c=(char)(s.charAt(idx+1)+1);
output.add(s.substring(0,idx+1)+c);
s=s.substring(0,idx);
}
else if(len > 1)
{
int i1=Integer.parseInt(sub);
i1=i1+1;
String st1=i1+"";
output.add(s.substring(0,idx+1)+st1);
s=s.substring(0,idx);
}
}
return output;
}
the above is my program..the values returned are correct except that it doesnt return
for example
if input a.1
it returns a.2 and b but not a.1.a
> the above is my program..the values returned are
> correct except that it doesnt return
> for example
> if input a.1
> it returns a.2 and b but not a.1.a
I tried your code but everything comes out wrong.
I should try a different approach. Breaking up your method in smaller pieces would be more clearly. I find your method hard to follow like that.
You could try it like this:
import java.util.ArrayList;
public class StringGen {
/** main. */
public static void main(String [] args) {
String list = "a.10.a.1.c.a";
ArrayList arr = codeGen(list);
for(int i = 0; i < arr.size(); i++) {
System.out.println(arr.get(i));
}
}
/** Generate the String-list. */
private static ArrayList codeGen(String str) {
ArrayList output = new ArrayList();
if(lastIsNumerical(str)) { str += ".a"; }
else { str += ".1"; }
output.add(str);
while(hasPoints(str)) {
str = removeLast(str);
str = increaseLast(str);
output.add(str);
}
return output;
}
/** Removes the last element. */
private static String removeLast(String str) {
// ...
}
/** Increases the last element. */
private static String increaseLast(String str) {
// ...
// use the method lastIsNumerical(str) here.
// ...
}
/** Checks if the last element is a 'int'. */
private static boolean lastIsNumerical(String str) {
// ...
}
/** Checks if there's at least 1 point. */
private static boolean hasPoints(String str) {
// ...
}
} // class StringGen
Good luck.