Authors:
Stuart Reges, Marty Stepp
Chapter:
Arraylists
Exercise:
Exercises
Question:14 | ISBN:9780136091813 | Edition: 2
Question
Write a method called removeShorterStrings that accepts an ArrayList of strings as a parameter and removes from each pair of values the shorter string in the pair. If the list is of odd length, the final element is unchanged. For
example, suppose that a list contains ["four", "score", "and", ""seven", "years", "ago", "our"] . In the first pair ( "four" and "score") the shorter string is "four" . In the second pair ("and" and "seven") the shorter string is "and" . In the third pair ("years" and "ago" ) the shorter string is "ago" . Your method should remove these shorter strings, changing the list to store ["score", "seven", "years", "our"] . If both strings in a pair have the same length, remove the first string in the pair.
Answer
Implementation of removeShorterStrings method:
public static void removeShorterStrings(
ArrayList strList)
{
for(int i = 0; i < strList.size() - 1; i++)
{
if(strList.get(i).length()
<= (strList.get(i + 1).length()))
{
strList.remove(i);
}
else
{
strList.remove(i + 1);
}
}
}