/* Given two strings, A and B, create a bigger string made of the first char * of A, the first char of B, the second char of A, the second char of B, * and so on. Any leftover chars go at the end of the result. */ public String mixString(String a, String b) { char[] arr; String end; int count = 0; if(a.length() < b.length()) { arr = new char[2 * a.length()]; end = b.substring(a.length()); } else { arr = new char[2 * b.length()]; end = a.substring(b.length()); } for(int i = 0; i < arr.length / 2; i++) { arr[count] = a.charAt(i); count++; arr[count] = b.charAt(i); count++; } return new String(arr) + end; }