Question

Basically I’m looking to take a string and just alternate between front and back. For instance, let’s say I have the following string.

Android

That would then be output like this:

adnidor

It would alternate between the front and back

First letter `a`
Last letter `d`
Second letter `n`
Second to last `i`
etc.
to give `adnidor` in the end

How could something like this be done?

=======

The final solution went like this:

String r = "";
String s = "android";
int i = 0;
int j = s.length() - 1;
while (i < j) {
    r += s.charAt(i++);
    if (i < j) {
        r+= s.charAt(j--);
    }
}
if (s.length() % 2 == 0) {
    int l = (s.length() / 2) - 1;
    int f = l + 1;
    r = r + s.charAt(f);
}
else {
    int l = ((s.length()) / 2);
    r = r + s.charAt(l);
}

Answer 1

String weird_transformation(String s) {
  r = "";
  int i = 0;
  int j = s.length() - 1;
  while (i < j) {
    r += s.charAt(i++);
    if (i <= j) {
       r+= s.charAt(j--);
    }
  }
  return r;
}