private static void decode(String s) {
int len=s.length();
StringBuffer sb=new StringBuffer();
ArrayList<Integer> al=new
ArrayList<Integer>();
for(int i=0;i<len;){
if(isNum(s.charAt(i)))
{
int end=i+1;
int j=i+1;
while(j<len)
{
if(isNum(s.charAt(j)))
{
end=j+1;
j++;
}
else
break;
}
if(al.size()==0)
{
for(int
z=0;z<Integer.valueOf(s.substring(i,end))-1;z++)
{
sb.append(s.substring(0,i));
}
al.add(end);
}
else{
for(int
z=0;z<Integer.valueOf(s.substring(i,end))-1;z++)
{
sb.append(s.substring(al.get(0),i));
}
al.set(0, end);
}
i=end;
}
else
{
sb.append(s.charAt(i));
i++;
}
}
System.out.println(sb.toString());
}
private static boolean isNum(char c) {
if(c-48>=0 && c-48<=9)
{
return true;
}
return false;
}
