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| @Override | ||
| public void setString(String string) { | ||
| myString = string; |
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this.myString as it is a property of the class.
| public int count() { | ||
| return 0; | ||
| if (myString == null || myString.length() == 0) { | ||
| return 0; |
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Input Validation: The code correctly checks if the input string (myString) is null or empty. Returning 0 in these cases seems appropriate, assuming that an empty string should not be counted as a word.
| wordCount++; | ||
| } | ||
| } | ||
| return wordCount; |
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The code iterates over the tokens and checks if each token consists only of alphabetical characters using a regular expression pattern. This pattern matches strings that contain only one or more uppercase or lowercase letters. This approach assumes that words are defined as sequences of alphabetic characters without any punctuation or numbers. If this definition aligns with your requirements, then the code is suitable.
| } else if (n > myString.length()) { | ||
| throw new IndexOutOfBoundsException("n cannot exceed length of parameter String"); | ||
| } | ||
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throws appropriate exceptions for invalid cases.
| throw new IndexOutOfBoundsException("n cannot exceed length of parameter String"); | ||
| } | ||
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| ArrayList<Character> characters = new ArrayList<Character>(); |
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Instead of new ArrayList(), you can use new ArrayList<>() to let the compiler infer the type.
| String[] words = myString.split(" | "); | ||
| String[] subWords = new String[numberOfWords]; | ||
| for (int i = 0, j = startWord - 1; i < numberOfWords; i++, j++) { | ||
| subWords[i] = words[j]; |
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Instead of using a fixed-size array subWords, consider using a List implementation, such as an ArrayList, to allow for dynamic resizing as needed. This eliminates the need to calculate the number of words beforehand.
| } | ||
| char[] charString = myString.toCharArray(); | ||
| char[] referenceString = myString.toCharArray(); | ||
| for (int i = 0; i < charString.length; i++) { |
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The code creates two separate character arrays, charString and referenceString, from myString.toCharArray(). However, you can directly modify charString in place without the need for the referenceString array.
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In the test class, add more test cases to cover different scenarios and edge cases.
such as:
assertEquals("bcdea", stringManipulator.restoreString(new int[]{1, 2, 3, 4, 0}));
assertEquals("", stringManipulator.restoreString(new int[]{}));
assertEquals("Hello, World!", stringManipulator.restoreString(new int[]{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}));
Additional test cases help ensure the code handles different inputs correctly and increase the overall test coverage.
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Overall Recap: These improvements result in a more robust and efficient code implementation, with enhanced error handling and increased test coverage. It's important to thoroughly test the code and consider edge cases to ensure its correctness and reliability.
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