The "733t hax0rs" like to make their text look cool by replacing characters with similar-looking symbols: e becomes 3, i becomes 1, l becomes 7, and o becomes 0.

For example, Hello is turned into H3770.

Complete the following file:

public class ReplaceCheck { /** A method to replace letters as follows: the letter e becomes 3, the letter i becomes 1, the letter l becomes 7, and the letter o becomes 0. @param str a string @return the string with the characters replaced */ public static String replace(String str) { . . . } }