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Québec
Guest
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 Posted: Thu Nov 27, 2003 12:59 pm Post subject: ListIterator |
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Hi again,
Why this does not work?
for (ListIterator it2=it.listIterator(it.size()); it2.hasNext() {
System.out.println (it2.next() + "-");
/*
for(int k =0; k<vow.length;k++){
if(it2.next().equals(vow[0])){
it2.previous();
it2.remove();
it2.next();
it2.remove();
it2.next();
it2.remove();
}
}
*/
}
Jean
===================================
import java.util.*;
public class MyCollection{
public static void print(Collection it){
Iterator it2 = it.iterator();
System.out.println();
while(it2.hasNext())
System.out.print(it2.next());
System.out.println();
}
public static void vowels(List it){
String[] vow = {"a", "â", "ä", "à", "e", "ê", "é", "è", "ë", "i", "î", "ï",
"o", "ô", "ö", "u", "û", "ü"};
for (ListIterator it2=it.listIterator(it.size()); it2.hasNext(){
System.out.println ((String)it2.next() + "-");
/*
for(int k =0; k
if(it2.next().equals(vow[0])){
it2.previous();
it2.remove();
it2.next();
it2.remove();
it2.next();
it2.remove();
}
}
*/
}
System.out.println("The End");
}
public double comp(String str1, String str2){
int len1 = str1.length();
int len2 = str2.length();
int len = (len1 > len2) ? len1 : len2;
List c1 = new ArrayList();
Collection c2 = new ArrayList();
//Collection c3 = Arrays.asList(str1.toCharArray());
for (int k = 0;k
c1.add(String.valueOf(str1.charAt(k)));
for (int m = 0;m
c2.add(String.valueOf(str2.charAt(m)));
List smallest = new ArrayList();
/*
Collections.sort(c1);
print(c1);
Collections.shuffle(c1);
print(c1);
*/
if(len1 < len2){
c2.retainAll(c1);
smallest = (List)c1;
}else{
c1.retainAll(c2);
smallest = (List)c2;
}
print (smallest);
vowels (smallest);
print (smallest);
return ((double)smallest.size()/(double)len);
}
public static void main(String[] args) {
String str3 = "the_miseducation_of_lauryn_hill";
String str4 = "ms edcation oflaryn hill";
System.out.println("n" + new MyCollection().comp(str3, str4));
}
}
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Fredrik Lindner
Guest
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| Posted: Thu Nov 27, 2003 1:49 pm Post subject: Re: ListIterator |
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Hi Québec
"Québec" <jpda (AT) vidn (DOT) ca> wrote
| Quote: | Hi again,
Why this does not work?
|
It's quite difficult to tell when you don't inform us what the problem is.
Does the code generate an exception? If so what is the exception. Doesn't
the code work as you'd expect? Then what is it supposed to do?
Anyway, in your code I see the following statement
ListIterator it2=it.listIterator( it.size() );
shortly follwowed by
( (String) it2.next() ...
Since the Iterator is positioned just by the end of the list the it2.next()
call should cause a NoSuchElementException. Are you experiencing that or am
I misuderstanding your code?
Do provide some more details concerning your problem and I'll try to help.
/Fredrik
| Quote: |
for (ListIterator it2=it.listIterator(it.size()); it2.hasNext(){
System.out.println (it2.next() + "-");
/*
for(int k =0; k<vow.length;k++){
if(it2.next().equals(vow[0])){
it2.previous();
it2.remove();
it2.next();
it2.remove();
it2.next();
it2.remove();
}
}
*/
}
Jean
===================================
import java.util.*;
public class MyCollection{
public static void print(Collection it){
Iterator it2 = it.iterator();
System.out.println();
while(it2.hasNext())
System.out.print(it2.next());
System.out.println();
}
public static void vowels(List it){
String[] vow = {"a", "â", "ä", "à", "e", "ê", "é", "è", "ë", "i", "î",
"ï",
"o", "ô", "ö", "u", "û", "ü"};
for (ListIterator it2=it.listIterator(it.size()); it2.hasNext(){
System.out.println ((String)it2.next() + "-");
/*
for(int k =0; k
if(it2.next().equals(vow[0])){
it2.previous();
it2.remove();
it2.next();
it2.remove();
it2.next();
it2.remove();
}
}
*/
}
System.out.println("The End");
}
public double comp(String str1, String str2){
int len1 = str1.length();
int len2 = str2.length();
int len = (len1 > len2) ? len1 : len2;
List c1 = new ArrayList();
Collection c2 = new ArrayList();
//Collection c3 = Arrays.asList(str1.toCharArray());
for (int k = 0;k
c1.add(String.valueOf(str1.charAt(k)));
for (int m = 0;m
c2.add(String.valueOf(str2.charAt(m)));
List smallest = new ArrayList();
/*
Collections.sort(c1);
print(c1);
Collections.shuffle(c1);
print(c1);
*/
if(len1 < len2){
c2.retainAll(c1);
smallest = (List)c1;
}else{
c1.retainAll(c2);
smallest = (List)c2;
}
print (smallest);
vowels (smallest);
print (smallest);
return ((double)smallest.size()/(double)len);
}
public static void main(String[] args) {
String str3 = "the_miseducation_of_lauryn_hill";
String str4 = "ms edcation oflaryn hill";
System.out.println("n" + new MyCollection().comp(str3, str4));
}
}
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VisionSet
Guest
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| Posted: Thu Nov 27, 2003 1:50 pm Post subject: Re: ListIterator |
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"Québec" <jpda (AT) vidn (DOT) ca> wrote
| Quote: | Hi again,
Why this does not work?
for (ListIterator it2=it.listIterator(it.size()); it2.hasNext(){
|
ListIterator listIterator(int index)
Returns a list iterator of the elements in this list (in proper
sequence), starting at the specified position in the list.
so it2 will be empty!
--
Mike W
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