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Start your free trialChris Gauthier
Courses Plus Student 6,434 PointsData stucture challenge.
Hello, here is the next challenge. Can somebody explain to me clearly what they're looking for here? I assume that this is a good solution, but it doesn't pass the challenge.
Can somebody help?
package com.example.model;
import java.util.List;
import java.util.Set;
import java.util.HashSet;
public class Course {
private String mTitle;
private Set<String> mTags;
public Course(String title) {
mTitle = title;
// TODO: initialize the set mTags
mTags = new HashSet<String>();
}
public void addTag(String tag) {
// TODO add the tag
mTags.put(tag);
}
public void addTags(List<String> tags) {
// TODO: add all the tags passed in
for (List<String> tag : Mtags) {
mTags.put(tag);
}
}
public boolean hasTag(String tag) {
// TODO: Return whether or not the tag has been added
return false;
}
public String getTitle() {
return mTitle;
}
}
2 Answers
Yanuar Prakoso
15,196 PointsHi Chris
This is where your problems lies in your code:
public void addTag(String tag) {
// TODO add the tag
mTags.put(tag);
}
public void addTags(List<String> tags) {
// TODO: add all the tags passed in
for (List<String> tag : Mtags) {
mTags.put(tag);
}
First of all Set does not have method call put. If you want to add one component in this case string you need to use add method!
Second the your addTags method is wrong. You need to iterate all Strings in List called tags not Mtags and fetch it as a String (not List<String>) called tag. Then once again you add it (not put) into the mTags Set.
Your code should be like this:
public void addTag(String tag) {
// TODO add the tag
mTags.add(tag);
}
public void addTags(List<String> tags) {
// TODO: add all the tags passed in
for (String tag : tags) {
mTags.add(tag);
}
I hope this can help a little. happy coding!
Chris Gauthier
Courses Plus Student 6,434 Pointsyep, that got me there, thanks a bunch!