CSE 114: Computer Science I Fall 201 4. Index of Coincidence If two strings are superimposed on one another, then some letters may match one another. For example, in the two strings erw howrotethebookonlove weallliveinayellowsubmarine there are three positions that contain the same letter: the first (w), the fourteenth (e), and the twenty-seventh (e). of 27 possible positions, matches occur in three of them, or 11.1%. This percentage is called the index of coincidence for two strings. It is more than just a curiosity; during World War II,it was used to help decrypt enemy ciphers. Complete the coincidence() method. This method takes two String arguments of equal length. The method computes and returns its arguments' index of coincidence as a double value between 0.0 and 100.0. For normal written English, the index of coincidence has an average value of 6.6% (or 6.6 in our method); for random strings of letters, it is much lower, around 3.8% (3.8 from our method) on average. You may assume that the String arguments supplied to your method are of equal length, and consist solely of lowercase letters (no spaces, digits, punctuation, or capital letters). Use a loop to examine the pairs of corresponding characters (i.e, the characters that appear at the same index in each String). 3 899 Words Q English (US)