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Start your free trialRUCHI MISHRA
2,968 PointsNot able to get expected output
This is what i added, but nested loops not working
public List<String> getAllCategory() { List<String> category = new ArrayList<>(); for (BlogPost post: mPosts) { category.add(post.getCategory()); } return category; }
public Map<String, Integer> getCategoryCounts()
{ Map<String, Integer> categoryCounts = new HashMap<String, Integer>(); // List<String> category = new ArrayList<String>();
for (BlogPost post: mPosts) {
// category.add(post.getCategory()); for(String categ : getAllCategory() ) { Integer count = categoryCounts.get(categ); if(count == null) { count = 0; } count++; System.out.printf("%s %d",categ, count); categoryCounts.put(categ,count); } } return categoryCounts; }
package com.example;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
public class BlogPost implements Comparable<BlogPost>, Serializable {
private String mAuthor;
private String mTitle;
private String mBody;
private String mCategory;
private Date mCreationDate;
public BlogPost(String author, String title, String body, String category, Date creationDate) {
mAuthor = author;
mTitle = title;
mBody = body;
mCategory = category;
mCreationDate = creationDate;
}
public int compareTo(BlogPost other) {
if (equals(other)) {
return 0;
}
return mCreationDate.compareTo(other.mCreationDate);
}
public String[] getWords() {
return mBody.split("\\s+");
}
public List<String> getExternalLinks() {
List<String> links = new ArrayList<String>();
for (String word : getWords()) {
if (word.startsWith("http")) {
links.add(word);
}
}
return links;
}
public String getAuthor() {
return mAuthor;
}
public String getTitle() {
return mTitle;
}
public String getBody() {
return mBody;
}
public String getCategory() {
return mCategory;
}
public Date getCreationDate() {
return mCreationDate;
}
}
package com.example;
import java.util.List;
import java.util.ArrayList;
import java.util.Set;
import java.util.TreeSet;
import java.util.Map;
import java.util.HashMap;
public class Blog {
List<BlogPost> mPosts;
public Blog(List<BlogPost> posts) {
mPosts = posts;
}
public List<BlogPost> getPosts() {
return mPosts;
}
public Set<String> getAllAuthors() {
Set<String> authors = new TreeSet<>();
for (BlogPost post: mPosts) {
authors.add(post.getAuthor());
}
return authors;
}
public List<String> getAllCategory() {
List<String> category = new ArrayList<>();
for (BlogPost post: mPosts) {
category.add(post.getCategory());
}
return category;
}
public Map<String, Integer> getCategoryCounts()
{
Map<String, Integer> categoryCounts = new HashMap<String, Integer>();
// List<String> category = new ArrayList<String>();
for (BlogPost post: mPosts) {
// category.add(post.getCategory());
for(String categ : getAllCategory() )
{
Integer count = categoryCounts.get(categ);
if(count == null)
{
count = 0;
}
count++;
System.out.printf("%s %d",categ, count);
categoryCounts.put(categ,count);
}
}
return categoryCounts;
}
}
1 Answer
Yanuar Prakoso
15,196 PointsHi Ruchi
I posted my answer in your updated question post. Please check it out. I hope that will help you a little. Thank you