/* Return the number of times that the string "code" appears anywhere in the * given string, except we'll accept any letter for the 'd', so "cope" and * "cooe" count. */ public int countCode(String str) { int count = 0; for(int i = 0; i < str.length() - 3; i++) { if(str.substring(i, i + 2).equals("co") && str.charAt(i + 3) == 'e') count++; } return count; }