Posted By

borysn on 05/31/13

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list
java

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Last Edited at 05/31/13 11:00am

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Fill Character List From ASCII Table And Sort

/ Published in: Java

FIll a List with ASCII (0-127) characters with a given number of characters.

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private List<Character> initCharacterList(int numberOfCharacters, int asciiStart, int asciiEnd) {
	// first ensure ascii table values
	assertTrue("asciiStart is invalid", asciiStart >= 0 && asciiStart < asciiEnd);
	assertTrue("asciiEnd is invalid", asciiEnd <= 127 && asciiEnd > asciiStart);
 
	List<Character> list = new ArrayList<>();
 
	int asciiPos = asciiStart;
 
	for (int i = 0; i < numberOfCharacters; i++) {
		Character c = new Character((char)asciiPos);
		list.add(c);
		asciiPos++;
		if (asciiPos > asciiEnd) {
			asciiPos = asciiStart;
		}
	}
 
	Collections.sort(list);
 
	return list;
}