Created
March 6, 2013 06:17
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// Test.java | |
import java.util.Comparator; | |
import java.util.PriorityQueue; | |
public class Test | |
{ | |
public static void main(String[] args) | |
{ | |
Comparator<String> comparator = new StringLengthComparator(); | |
PriorityQueue<String> queue = | |
new PriorityQueue<String>(10, comparator); | |
queue.add("short"); | |
queue.add("very long indeed"); | |
queue.add("medium"); | |
while (queue.size() != 0) | |
{ | |
System.out.println(queue.remove()); | |
} | |
} | |
} | |
// StringLengthComparator.java | |
import java.util.Comparator; | |
public class StringLengthComparator implements Comparator<String> | |
{ | |
@Override | |
public int compare(String x, String y) | |
{ | |
// Assume neither string is null. Real code should | |
// probably be more robust | |
if (x.length() < y.length()) | |
{ | |
return -1; | |
} | |
if (x.length() > y.length()) | |
{ | |
return 1; | |
} | |
return 0; | |
} | |
} |
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