Java Reference
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{
String temp;
temp = a.get(i);
a.set(i, a.get(j));
a.set(j, temp);
}
/**
Returns the index of the lexicographically first value among
a.get(startIndex), a.get(startIndex+1),...,a.get(a.size()
1)
*/
private static int indexOfSmallest(
int startIndex, ArrayList<String> a)
{
String min = a.get(startIndex);
int indexOfMin = startIndex;
int index;
for (index = startIndex + 1; index < a.size(); index++)
if ((a.get(index)).compareTo(min) < 0)
{
min = a.get(index);
indexOfMin = index;
}
return indexOfMin;
}
}
10. No, the base type of an ArrayList cannot be a primitive type, such as int ,
double , or char . You can, however, have an ArrayList with base type Integer
that can be used to store integers.
11. Notice that the following, while correct, is not as easy to understand as the
for-each loop.
for ( int i; i < a.size(); i++)
System.out.println(a.get(i) + " differs from average by "
+ (a.get(i) average));
12. public static <T> int getMidindex(T[] a)
{
return a.length/2;
}
13. This is a trick question. As we explained in the text, you cannot have an array of
type UnorderedPair<String>[] or of type Pair<String>[] .
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