The method below generates all nonempty substrings of a word passed as argument.Assuming that the string contains no duplicate characters, select the statement to complete the method so that it prints all nonempty substrings correctly.
A)printSubstrings(word.substring(0));
B)printSubstrings(word.substring(1));
C)printSubstrings(word.substring(word.length()));
D)printSubstrings(word.substring(word.length() - 1));

Question

The method below generates all nonempty substrings of a word passed as argument.Assuming that the string contains no duplicate characters, select the statement to complete the method so that it prints all nonempty substrings correctly.  
A)printSubstrings(word.substring(0)); 
B)printSubstrings(word.substring(1)); 
C)printSubstrings(word.substring(word.length())); 
D)printSubstrings(word.substring(word.length() - 1));

Quizplus · Accepted Answer

We want to generate all nonempty substrings, which means we should start from the second character and generate substrings of increasing length. Choice B achieves this by recursively calling the method with word.substring(1), which starts from the second character of the word.

The Method Below Generates All Nonempty Substrings of a Word