Jenae Vince

jenae.vince@example.com

RESULT

STATUS:

PASS

TIME:

1h 4min

TOTAL

82%

BREAKDOWN

HTML/CSS		100%
JavaScript		100%
jQuery		100%
TypeScript		100%
Java		81%
Angular		50%
Java Spring		50%

HISTORY
NOTES

Candidate started the test on Oct 14, 2019
Candidate completed the test on Oct 14, 2019

demo : Line 1 Line 2 Line 3 Space 1
demo : Note 0
demo : Note 3
demo : Note 2
demo : Note 1

Order

Question / Answer

(Expand all)

Score

Time

Difficulty

Type

Max points

Q: Add necessary HTML attrib...
A: <!DOCTYPE html> <html> <h...

100%

4min 16sec
(expected 7min)

Easy

CODE

3 points

HTML/CSS HTML Attributes Premium

DESCRIPTION

Add necessary HTML attributes so that paragraph editor has the following properties:

When mouse is on paragraph, tooltip with text "Click for editing" should be shown.
When user clicks on paragraph, paragraph should be editable.
Spell checking should be enabled with default language "en".

ANSWER

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Paragraph editor</title>
</head>
<body>
  <p id="editor" title="Click for editing" contenteditable="true" spellcheck="true" lang="en">
    Hello, I should be editable if you click on me!
  </p>
</body>
</html>

EVALUATION

Run OK and all test cases pass, great!

Tooltip is shown: Correct answer
Paragraph is editable: Correct answer
Correct spell checking is enabled: Correct answer

Last answer

 <!DOCTYPE html>
 <html>
 <head>
   <meta charset="utf-8">
   <title>Paragraph editor</title>
 </head>
 <body>
                         <p
                         
                        id="editor"
                         
                        title="Click
                         
                        for
                         
                        editing"
                         
                        contenteditable="true"
                         
                        spellcheck="true"
                         
                        lang="en">
     Hello, I should be editable if you click on me!
   </p>
 </body>
 </html>

Template

 <!DOCTYPE html>
 <html>
   <head>
     <meta charset="utf-8">
     <title>Paragraph editor</title>
   </head>
   <body>
                         <p
                         
                        id="editor">
       Hello, I should be editable if you click on me!
     </p>
   </body>
 </html>

Q: Write CSS so that the hea...
A: <!DOCTYPE html> <html> <h...

100%

3min 3sec
(expected 7min)

Hard

CODE

6 points

HTML/CSS CSS Advanced Premium

DESCRIPTION

Write CSS so that the header element is 80% of the width of its parent, and the section should be 80% of the width of its parent plus 10 pixels.

ANSWER

<!DOCTYPE html>
<html>
<head>
  <title>Addition</title>
   <style>
     article {width:100%}
     header {width:80%}
     section {width: calc(80% + 10px)}
   </style>
</head>
<body>
  <article>
    <header>
      <h1>Addition</h1>
    </header>
    <section>
      <p>The addition of two numbers is the total amount of those quantities combined.</p>
    </section>
  </article>
</body>
</html>

EVALUATION

Run OK and all test cases pass, great!

Header size is correct: Correct answer
Section size is correct: Correct answer

Last answer

 <!DOCTYPE html>
 <html>
 <head>
   <title>Addition</title>
    <style>
                         article
                         {
                        width:100%
                        }
-     header {width:80%}
-     section {width: calc(80% + 10px)}
    </style>
 </head>
 <body>
   <article>
     <header>
       <h1>Addition</h1>
     </header>
     <section>
       <p>The addition of two numbers is the total amount of those quantities combined.</p>
     </section>
   </article>
 </body>
 </html>

Template

 <!DOCTYPE html>
 <html>
   <head>
     <title>Addition</title>
   <style>
                         /*
                         
                        Write
                         
                        your
                         
                        CSS
                         
                        solution
                         
                        here
                         
                        */
   </style>
   </head>
   <body>
     <article>
       <header>
         <h1>Addition</h1>
       </header>
       <section>
         <p>The addition of two numbers is the total amount of those quantities combined.</p>
       </section>
     </article>
   </body>
 </html>

Q: Function/class PositiveNu...
A: function PositiveNumbers(...

100%

2min 58sec
(expected 3min)

Easy

MCA

3 points

JavaScript Closures Premium

DESCRIPTION

Function/class PositiveNumbers generates a sequence of positive integers: 1, 2, 3, ...

Which forms ensure that the variable current cannot be modified outside the function/class PositiveNumbers?

ANSWERCorrect answer | Candidate's selection

  function PositiveNumbers() { current = 0; }
PositiveNumbers.prototype.next = function() { return ++current; }

  function PositiveNumbers() { this.current = 0; }
PositiveNumbers.prototype.next = function() { return ++this.current; }

  function PositiveNumbers() {
    this.current = 0;
    this.next = function() { return ++this.current; }
}

  function PositiveNumbers() {
    var current = 0;
    this.next = function() { return ++current; }
}

  var PositiveNumbers = function() {
    var current = 0;
    this.next = function() { return ++current; }
};

Last answer

1	function PositiveNumbers () {






2	var current = 0;
3	this.next = function() { return ++current; }
4	}, var PositiveNumbers = function () {



5	var current = 0;
6	this.next = function() { return ++current; }
7	};

Template

1	() function PositiveNumbers () {
2	this.current = 0;
3	this.next = function() { return ++this.current; }
4	}
5	() function PositiveNumbers() { current = 0; }
6	PositiveNumbers.prototype.next = function() { return ++current; }
7	(*) function PositiveNumbers() {
8	var current = 0;
9	this.next = function() { return ++current; }
10	}
11	() function PositiveNumbers() { this.current = 0; }
12	PositiveNumbers.prototype.next = function() { return ++this.current; }
13	(*) var PositiveNumbers = function() {
14	var current = 0;
15	this.next = function() { return ++current; }
16	};
17

Q: Complete the copyElement ...
A: function copyElement(sour...

100%

6min 44sec
(expected 7min)

Easy

CODE

3 points

jQuery JavaScript Selectors Premium

DESCRIPTION

Complete the copyElement function so that, when passed a source and target selector, a deep copy of the source objects is prepended to the target object.

For example, after copyElement('.A','.B') is executed, the following divs:

<div class="A"></div>
<div class="B"></div>

would become:

<div class="A"></div>
<div class="B">
  <div class="A"></div>
</div>

ANSWER

function copyElement(source, target) {
  $(source).clone().prependTo(target);
  
  
  //var $tmp =
}

/* HTML code for testing purposes (do not submit uncommented):
<div class="A"></div>
<div class="B"></div>
*/

EVALUATION

Run OK and all test cases pass, great!

Example case: Correct answer
Source has children: Correct answer
Target has children: Correct answer

Last answer

 function copyElement(source, target) {
-  $(source).clone().prependTo(target);
-  //var $tmp =
 }
 /* HTML code for testing purposes (do not submit uncommented):
 <div class="A"></div>
 <div class="B"></div>
 */

Template

 function copyElement(source, target) {
 }
 /* HTML code for testing purposes (do not submit uncommented):
 <div class="A"></div>
 <div class="B"></div>
 */

Q: Write a function that tak...
A: function updateATag(origi...

100%

6min 43sec
(expected 10min)

Easy

CODE

3 points

jQuery DOM Manipulation JavaScript New Premium

DESCRIPTION

Write a function that takes as input an original link and a new link and changes the href attributes for all <a> tags that target the original link to the new link.

For example, updateATag('https://www.google.com/', 'https://www.w3schools.com/') should change all href attributes targeting https://www.google.com/, so that they now target https://www.w3schools.com/.

ANSWER

function updateATag(originalLink, newLink) {
  $('a').each(function(link) {
  var value = $(this).attr('href');
  if(value === originalLink) {
    $(this).attr('href', newLink);
  }
  })
}

document.body.innerHTML = "<a href='https://www.google.com/'>Original</a>";
updateATag('https://www.google.com/', 'https://www.w3schools.com/');
console.log($('a').eq(0).attr('href'));

EVALUATION

Run OK and all test cases pass, great!

Example case: Correct answer
Single link replacement: Correct answer
Multiple link replacement: Correct answer
Only anchor href attributes are modified: Correct answer

Last answer

1	function updateATag(originalLink, newLink) {
2	$ ( 'a' ). each ( function ( link ) {
3	var value = $(this).attr('href');
4	if(value === originalLink) {
5	$(this).attr('href', newLink);
6	}
7	})
8	}


9
10	document.body.innerHTML = "<a href='https://www.google.com/'>Original</a>";
11	updateATag('https://www.google.com/', 'https://www.w3schools.com/');
12	console.log($('a').eq(0).attr('href'));

Template

1	function updateATag(originalLink, newLink) {
2	// Write your code here .





3	}
4
5	document.body.innerHTML = `<a href='https://www.google.com/'>Original</a>`;
6

7	updateATag('https://www.google.com/', 'https://www.w3schools.com/');
8	console.log($('a').eq(0).attr('href'));

Q: Consider the following co...
A: person.height is "192cm"....

100%

1min 41sec
(expected 2min)

Easy

MCA

3 points

TypeScript OOP Spread Premium

DESCRIPTION

Consider the following code:

class Person {
    hair: string;
    height: string;
    eyeColor: string;
}

let first = { hair: "brunette", height: "173cm" };
let second = { eyeColor: "blue", height: "192cm" };
let third = { hair: "blonde" };

let person: Person = { ...first, ...second, ...third };

Select the statements that are correct.

ANSWERCorrect answer | Candidate's selection


person.height is "192cm".


person.eyeColor is null.


person.height is undefined.


person.hair is "blonde".


person.eyeColor is "blue".


person.hair is "brunette".

Last answer

1	person . height is "192cm" ., person . hair is "blonde" ., person . eyeColor is "blue" .

Template

1	() person . hair is &quot ; brunette&quot ;.
2	(*) person.hair is "blonde".
3	(*) person.eyeColor is "blue".
4	() person.eyeColor is null.
5	() person.height is undefined.
6	(*) person.height is "192cm".
7

Q: The following code define...
A: The compiler would flag (...

100%

3min
(expected 3min)

Hard

MCA

6 points

TypeScript OOP Premium

DESCRIPTION

The following code defines interfaces for a Stream and a File, as well as several functions that can be used to interact with them.

interface Stream {
    open(): void;
    dispose(): void;
}

interface File {
    open(): void;
    delete(): void;
}

function fetchResource(): Stream | File {
    return {
        open: function(){ console.log('opening'); },
        dispose: function(){ console.log('disposing'); },
        delete: function(){ console.log('delete'); }
    };
}

function isDeleteable(openable: Stream | File): openable is File {
    return (<File>openable).delete !== undefined;
}

let resource = fetchResource();
resource.open();

if (isDeleteable(resource)) {
    resource.delete();
} else {
    resource.dispose();
}

Which statements about the behavior of the above code are correct?

ANSWERCorrect answer | Candidate's selection


The compiler will flag resource.dispose() as an error without the appropriate cast to Stream.


fetchResource returns an intersection type of Stream and File.


The compiler would flag (openable).delete as an error if the cast was not present.


fetchResource returns a union type of Stream and File.


The object literal returned by fetchResource may only provide implementations for open, dispose and delete.

Last answer

1	The compiler would flag ( openable ). delete as an error if the cast was not present ., fetchResource returns a union type of Stream and File ., The object literal returned by fetchResource may only provide implementations for open , dispose and delete .

Template

1	() fetchResource returns an intersection type of Stream and File .
2	(*) fetchResource returns a union type of Stream and File.
3	(*) The compiler would flag (openable).delete as an error if the cast was not present.
4	() The compiler will flag resource.dispose() as an error without the appropriate cast to Stream.
5	(*) The object literal returned by fetchResource may only provide implementations for open, dispose and delete.
6

Q: Which of the following st...
A: A structural directive pr...

50%

1min 37sec
(expected 2min)

Hard

MCA

6 points

Angular Structural Directive Premium

DESCRIPTION

Which of the following statements are true of structural directives?

ANSWERCorrect answer | Candidate's selection

  A structural directive prefixed with an asterisk expands to a more verbose template definition using its microsyntax.

  A structural directive may contain its own variables that can be captured and used in a template expression.

  A structural directive is used to control attributes of a specific element.

  A structural directive must be used in it's concise asterisk form, rather than its template form.

  A structural directive is declared using the @Directive class decorator.

Last answer

1	A structural directive prefixed with an asterisk expands to a more verbose template definition using its microsyntax ., A structural directive may contain its own variables that can be captured and used in a template expression ., A structural directive is used to control attributes of a specific element ., A structural directive is declared using the @Directive class decorator .

Template

1	() A structural directive is used to control attributes of a specific element .
2	(*) A structural directive is declared using the @Directive class decorator.
3	(*) A structural directive prefixed with an asterisk expands to a more verbose template definition using its microsyntax.
4	() A structural directive must be used in it's concise asterisk form, rather than its template form.
5	(*) A structural directive may contain its own variables that can be captured and used in a template expression.
6

Q: The following component i...
A: <counter [count]="localNu...

50%

2min
(expected 2min)

Hard

MCA

6 points

Angular Expressions Premium

DESCRIPTION

The following component implements a counter. It consists of a button to increment the count and a label displaying the current value. It can be used within another components template.

import {Component, Input, Output, EventEmitter} from '@angular/core';
@Component({
    selector: 'counter',
    template: `
        <button (click)="increment()">Increment</button> {{ count }}
    `
})
export class Counter {
    @Input() count: number = 0;
    @Output() countChange: EventEmitter<number> = new EventEmitter<number>();
    increment() {
        this.count++;
        this.countChange.emit(this.count);
    }
}

Which of the following tags correctly include this component within the template and bind its value to the local variable 'localNumber'?

ANSWERCorrect answer | Candidate's selection


<counter [(ngModel)]="localNumber"></counter>


<counter [count]="localNumber" (countChange)="{{localNumber}}></counter>


<counter [count]="localNumber" (countChange)="localNumber=$event"></counter>


<counter *count="localNumber">{{localNumber}}</counter>


<counter [(count)]="localNumber"></counter>

Last answer

1	<counter [count]="localNumber" ( countChange ) ="localNumber=$event"></counter>

Template

1	() &lt ; counter [ ( ngModel ) ]=&quot ; localNumber&quot ; &gt ; &lt ; /counter&gt ;
2	(*) <counter [(count)]="localNumber"></counter>
3	(*) <counter [count]="localNumber" (countChange)="localNumber=$event"></counter>
4	() <counter [count]="localNumber" (countChange)="{{localNumber}}></counter>
5	() <counter *count="localNumber">{{localNumber}}</counter>
6

Q: Modify the Utilities clas...
A: public interface Utilitie...

50%

3min
(expected 3min)

Easy

CODE

3 points

Java OOP Premium

DESCRIPTION

Modify the Utilities class so that:

Other classes cannot extend it.
It cannot be instantiated in other classes.

ANSWER

public interface Utilities {
    public static void main(String args[]) {
    }
}

EVALUATION

Compilation OK with warnings , but 1 out of 2 test cases fail:

Utilities cannot be extended: Wrong answer
Utilities cannot be instantiated: Correct answer

Last answer

                         public
                         
                        interface
                         
                        Utilities
                         {
     public static void main(String args[]) {
     }
 }

Template

                         public
                         
                        class
                         
                        Utilities
                         {
     public static void main(String args[]) {
     }
 }

Q: A train has wagonCount wa...
A: import java.util.Hashtabl...

100%

2min 55sec
(expected 20min)

Hard

CODE

6 points

Java Bug Fixing Memory Management Premium

DESCRIPTION

A train has wagonCount wagons indexed as 0, 1, ..., wagonCount - 1. Each wagon must be filled in the constructor of the Train using the fillWagon function, which accepts the wagon's index and returns the wagon's cargo.

The code below works, but the server has enough memory only for a small train. Refactor the code so that the server has enough memory even for a large train.

ANSWER

import java.util.Hashtable;
import java.util.function.Function;

public class Train {
    //private Hashtable<Integer, Integer> wagons;
    private int[] wagons;

    public Train(int wagonCount, Function<Integer, Integer> fillWagon) {
        //this.wagons = new Hashtable<Integer, Integer>();

        this.wagons = new int[wagonCount];
        
        for (int i = 0; i < wagonCount; i++) {
            //this.wagons.put(i, fillWagon.apply(i));
            
            wagons[i] = fillWagon.apply(i);
        }
    }

    public int peekWagon(int wagonIndex) {
        return this.wagons[wagonIndex];
    }
    
    public static void main(String[] args) {
        Train train = new Train(10, wagonIndex -> wagonIndex);

        for (int i = 0; i < 10; i++) {
            System.out.println("Wagon: " + i + ", cargo: " + train.peekWagon(i));
        }
    }
}

EVALUATION

Compilation OK with warnings and all test cases pass, great!

Medium train: Correct answer
Large train: Correct answer

Last answer

 import java.util.Hashtable;
 import java.util.function.Function;
 public class Train {
                         //private
                         
                        Hashtable<Integer
                        , 
                        Integer>
                         
                        wagons
                        ;
-    private int[] wagons;
     public Train(int wagonCount, Function<Integer, Integer> fillWagon) {
                         //this
                        .
                        wagons
                         
                        =
                         
                        new
                         
                        Hashtable<Integer
                        , 
                        Integer>
                        ();
-        this.wagons = new int[wagonCount];
         for (int i = 0; i < wagonCount; i++) {
                         //this
                        .
                        wagons
                        .
                        put
                        (
                        i
                        , 
                        fillWagon
                        .
                        apply
                        (
                        i
                        ));
-            wagons[i] = fillWagon.apply(i);
         }
     }
     public int peekWagon(int wagonIndex) {
                         return
                         
                        this
                        .
                        wagons[wagonIndex]
                        ;
     }
     public static void main(String[] args) {
         Train train = new Train(10, wagonIndex -> wagonIndex);
         for (int i = 0; i < 10; i++) {
             System.out.println("Wagon: " + i + ", cargo: " + train.peekWagon(i));
         }
     }
 }

Template

 import java.util.Hashtable;
 import java.util.function.Function;
 public class Train {
                         private
                         
                        Hashtable<Integer
                        , 
                        Integer>
                         
                        wagons
                        ;
     public Train(int wagonCount, Function<Integer, Integer> fillWagon) {
                         this
                        .
                        wagons
                         
                        =
                         
                        new
                         
                        Hashtable<Integer
                        , 
                        Integer>
                        ();
         for (int i = 0; i < wagonCount; i++) {
                         this
                        .
                        wagons
                        .
                        put
                        (
                        i
                        , 
                        fillWagon
                        .
                        apply
                        (
                        i
                        ));
         }
     }
     public int peekWagon(int wagonIndex) {
                         return
                         
                        this
                        .
                        wagons
                        .
                        get
                        (
                        wagonIndex
                        );
     }
     public static void main(String[] args) {
         Train train = new Train(10, wagonIndex -> wagonIndex);
         for (int i = 0; i < 10; i++) {
             System.out.println("Wagon: " + i + ", cargo: " + train.peekWagon(i));
         }
     }
 }

Q: Consider the following cl...
A: import org.springframewor...

50%

10min
(expected 10min)

Easy

CODE

3 points

Java Spring Configuration New Premium

DESCRIPTION

Consider the following classes in com.testdome.service package:

BookRepository

package com.testdome.service;

import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Component;

@Component
public class BookRepository {
    
    public List<String> getBooks() {
        List<String> books = new ArrayList<>();
        books.add("Book");
        books.add("Short book");
        books.add("Long book");
        
        return books;
    }
}

BookSearchService

package com.testdome.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class BookSearchService {

    @Autowired
    public BookRepository bookRepository;
    
    public boolean bookExists(String bookName) {
        return bookRepository.getBooks().contains(bookName);
    }
}

Use BookSearch class with Spring annotations, so that BookRepository, BookSearchService, and RecommendationService are registered as Spring beans. RecommendationService should reuse the BookRepository instance that is registered as Spring bean.

ANSWER

import org.springframework.context.annotation.*;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

import com.testdome.service.*;

@Configuration
@ComponentScan(basePackageClasses = BookSearchService.class)
public class BookSearch {
    //BookRepository
        //BookSearchService
        //RecoomendationService
    
}

@Component
class RecommendationService {
    
    //@Bean
    //public BookRepository bookRepository() {
    //    return new BookRepository();
   // }
    
    //@Autowired
    public BookRepository repository;
        
    @Bean
    public String recommendBook() {
        return repository.getBooks().get(0);
    }
}

EVALUATION

Compilation OK with warnings , but 2 out of 4 test cases fail:

BookRepository is a Spring bean: Correct answer
BookSearchService is a Spring bean: Correct answer
RecommendationService is a Spring bean: Wrong answer
RecommendationService uses Spring bean BookRepository: Wrong answer

Last answer

                         import
                         
                        org
                        .
                        springframework
                        .
                        context
                        .
                        annotation
                        .
                        *
                        ;
-import org.springframework.context.annotation.Bean;
-import org.springframework.stereotype.Component;
 import com.testdome.service.*;
 @Configuration
-@ComponentScan(basePackageClasses = BookSearchService.class)
 public class BookSearch {
-    //BookRepository
-        //BookSearchService
-        //RecoomendationService
 }
-@Component
 class RecommendationService {
-    //@Bean
-    //public BookRepository bookRepository() {
-    //    return new BookRepository();
-   // }
-    //@Autowired
     public BookRepository repository;
-    @Bean
     public String recommendBook() {
         return repository.getBooks().get(0);
     }
 }

Template

                         import
                         
                        org
                        .
                        springframework
                        .
                        context
                        .
                        annotation
                        .
                        Configuration
                        ;
 import com.testdome.service.*;
 @Configuration
 public class BookSearch {
 }
 class RecommendationService {
     public BookRepository repository;
     public String recommendBook() {
         return repository.getBooks().get(0);
     }
 }

Q: Implement the function co...
A: import java.io.*; import ...

75%

15min
(expected 15min)

Easy

CODE

4 points

Java Stream Strings Premium

DESCRIPTION

Implement the function count, which returns the number of lines from the InputStream that contains text matching the provided String.

For example, when the String needle is "there" and the InputStream haystack contains:

Hello, there!
How are you today?
Yes, you over there.

The count function should return 2 ("Hello, there!" and "Yes, you over there.").

ANSWER

import java.io.*;
import java.util.*;

public class Needle {
    public static int count(String needle, InputStream haystack) throws Exception {
            String str = readString(haystack);
    int lastIndex = 0;
    int count = 0;

    while(lastIndex != -1){

      lastIndex = str.indexOf(needle,lastIndex);

      if(lastIndex != -1){
        count ++;
        lastIndex += needle.length();
      }
    }

    //System.out.println(readString(haystack));

    return count;
    }
    
    public static void main(String[] args) throws Exception {
        String inMessage = "Hello, there!\nHow are you today?\nYes, you over there.";

        try(InputStream inStream = new ByteArrayInputStream(inMessage.getBytes())) {
            System.out.println(Needle.count("there", inStream));
        }
    }
    
    static String readString(InputStream is) throws IOException {
    char[] buf = new char[2048];
    Reader r = new InputStreamReader(is, "UTF-8");
    StringBuilder s = new StringBuilder();
    while (true) {
      int n = r.read(buf);
      if (n < 0)
        break;
      s.append(buf, 0, n);
    }
    return s.toString();
  }
}

EVALUATION

Compilation OK with warnings , but 1 out of 4 test cases fail:

Example case: Correct answer
Single line: Correct answer
Several lines: Wrong answer
Different newlines: Correct answer

Last answer

1	import java.io.*;
2	import java.util.*;
3
4	public class Needle {
5	public static int count(String needle, InputStream haystack) throws Exception {
6	String str = readString ( haystack );
7	int lastIndex = 0;
8	int count = 0;
9
10	while(lastIndex != -1){
11
12	lastIndex = str.indexOf(needle,lastIndex);
13
14	if(lastIndex != -1){
15	count ++;
16	lastIndex += needle.length();
17	}
18	}
19
20	//System.out.println(readString(haystack));
21
22	return count;
23	}
24
25	public static void main(String[] args) throws Exception {
26	String inMessage = "Hello, there!\nHow are you today?\nYes, you over there.";
27
28	try(InputStream inStream = new ByteArrayInputStream(inMessage.getBytes())) {
29	System.out.println(Needle.count("there", inStream));
30	}
31	}
32
33	static String readString(InputStream is) throws IOException {
34	char[] buf = new char[2048];
35	Reader r = new InputStreamReader(is, "UTF-8");
36	StringBuilder s = new StringBuilder();
37	while (true) {
38	int n = r.read(buf);
39	if (n < 0)
40	break;
41	s.append(buf, 0, n);
42	}
43	return s.toString();
44	}
45	}

Template

1	import java.io.*;
2	import java.util.*;
3
4	public class Needle {
5	public static int count(String needle, InputStream haystack) throws Exception {
6	throw new UnsupportedOperationException ( "Waiting to be implemented . " );










7	}



8



9	public static void main(String[] args) throws Exception {
10	String inMessage = "Hello, there!\nHow are you today?\nYes, you over there.";
11
12	try(InputStream inStream = new ByteArrayInputStream(inMessage.getBytes())) {
13	System.out.println(Needle.count("there", inStream));

14	}












15	}
16	}