Kera Lafleur

kera.lafleur@example.com

RESULT

STATUS:

PASS

TIME:

44min

TOTAL

100%

BREAKDOWN

C#		100%
Numerical Reasoning		100%
jQuery		100%
SQLite		100%

HISTORY
NOTES

Invitation email sent on Mar 14, 2021 (ends on Mar 18, 2021)
Candidate started the test on Mar 15, 2021
Candidate completed the test on Mar 15, 2021

Order

Question / Answer

(Expand all)

Score

Time

Difficulty

Type

Max points

Q: Write a function that che...
A: using System; public clas...

100%

15min 35sec
(expected 30min)

Easy

CODE

4 points

C# Public

DESCRIPTION

Write a function that checks if a given sentence is a palindrome. A palindrome is a word, phrase, verse, or sentence that reads the same backward or forward. Only the order of English alphabet letters (A-Z and a-z) should be considered, other characters should be ignored.

For example, IsPalindrome("Noel sees Leon.") should return true as spaces, period, and case should be ignored resulting with "noelseesleon" which is a palindrome since it reads same backward and forward.

ANSWER

using System;
public class Palindrome
{
    public static bool IsPalindrome(string str)
    {
        string org = "";
          foreach (char c in str.ToLower())  
              if (char.IsLetter(c)) //ignore anything except alphabet 
                  org += c; //create new string just alphabet 

          char[] temp = org.ToCharArray();
          Array.Reverse(temp); //reverse the string 
          string reverese = new string(temp);
          return org == reverese; //compare two string 
    }

    public static void Main(string[] args)
    {
        Console.WriteLine(IsPalindrome("Noel sees Leon."));
    }
}

EVALUATION

Compilation OK and all test cases pass, great!

Example case: Correct answer
Lowercase single word: Correct answer
Any case single word: Correct answer
Sentence: Correct answer

Last answer

 using System;
 public class Palindrome
 {
     public static bool IsPalindrome(string str)
     {
                         string
                         
                        org
                         
                        =
                         
                        ""
                        ;
-          foreach (char c in str.ToLower())
-              if (char.IsLetter(c)) //ignore anything except alphabet
-                  org += c; //create new string just alphabet
-          char[] temp = org.ToCharArray();
-          Array.Reverse(temp); //reverse the string
-          string reverese = new string(temp);
-          return org == reverese; //compare two string
     }
     public static void Main(string[] args)
     {
         Console.WriteLine(IsPalindrome("Noel sees Leon."));
     }
 }

Template

 using System;
 public class Palindrome
 {
     public static bool IsPalindrome(string str)
     {
                         throw
                         
                        new
                         
                        NotImplementedException
                        (
                        "Waiting
                         
                        to
                         
                        be
                         
                        implemented
                        .
                        "
                        );
     }
     public static void Main(string[] args)
     {
         Console.WriteLine(IsPalindrome("Noel sees Leon."));
     }
 }

Q: How old is John if, in 38...
A: 19

100%

1min 31sec
(expected 4min 30sec)

Easy

MCQ

3 points

Numerical Reasoning Public

DESCRIPTION

How old is John if, in 38 years, he will be 3 times as old as he is today?

ANSWERCorrect answer | Candidate's selection

Last answer

1	19

Template

1	() 13
2	() 17
3	(*) 19
4	() 21
5	() 24
6	() 38

Q: Write a function that fin...
A: using System; public cla...

100%

19min 57sec
(expected 30min)

Hard

CODE

6 points

C# Strings Public

DESCRIPTION

Write a function that finds the zero-based index of the longest run in a string. A run is a consecutive sequence of the same character. If there is more than one run with the same length, return the index of the first one.

For example, IndexOfLongestRun("abbcccddddcccbba") should return 6 as the longest run is dddd and it first appears on index 6.

ANSWER

using System;

public class Run
{
    public static int IndexOfLongestRun(string str)
    {
     int startFlag = -1, lengthRun = 0;
        for (int i = 0; i < str.Length; )
    {
        var tmp = str[i]; // temporary variable  
        int longestIndex = i;
        while ((str[i] == tmp) && (++i < str.Length)) // it will check how many character are the same  and it should not goes more than string size
        { }
        int runLength = i - longestIndex;
        if (lengthRun < runLength)
        {
            startFlag = longestIndex;
            lengthRun = runLength;
        }
    }
    return startFlag;    }

    public static void Main(string[] args)
    {
        Console.WriteLine(IndexOfLongestRun("abbcccddddcccbba"));
    }
}

EVALUATION

Compilation OK and all test cases pass, great!

Example case: Correct answer
Word with single longest run: Correct answer
Word with 200 letters: Correct answer
Performance test on a large word: Correct answer

Last answer

 using System;
 public class Run
 {
     public static int IndexOfLongestRun(string str)
     {
                         int
                         
                        startFlag
                         
                        =
                         
                        -1
                        , 
                        lengthRun
                         
                        =
                         
                        0
                        ;
-        for (int i = 0; i < str.Length; )
+    {
-        var tmp = str[i]; // temporary variable
-        int longestIndex = i;
-        while ((str[i] == tmp) && (++i < str.Length)) // it will check how many character are the same  and it should not goes more than string size
-        { }
-        int runLength = i - longestIndex;
-        if (lengthRun < runLength)
+        {
-            startFlag = longestIndex;
-            lengthRun = runLength;
         }
+    }
-    return startFlag;    }
     public static void Main(string[] args)
     {
         Console.WriteLine(IndexOfLongestRun("abbcccddddcccbba"));
     }
 }

Template

 using System;
 public class Run
 {
     public static int IndexOfLongestRun(string str)
     {
                         throw
                         
                        new
                         
                        NotImplementedException
                        (
                        "Waiting
                         
                        to
                         
                        be
                         
                        implemented
                        .
                        "
                        );
     }
     public static void Main(string[] args)
     {
         Console.WriteLine(IndexOfLongestRun("abbcccddddcccbba"));
     }
 }

Q: Fix the bugs in the JavaS...
A: function registerClickHan...

100%

4min 52sec
(expected 15min)

Hard

CODE

5 points

jQuery JavaScript This Public

DESCRIPTION

Fix the bugs in the JavaScript code without removing the setTimeout function. The code currently alerts undefined instead of anchor inner contents.

ANSWER

function registerClickHandler() {
    $('#clickme').click(function (e) {
        setTimeout(function () {
            alert(e.currentTarget.innerHTML);
        }, 200);
    });
} // inside the timeout handle this is not a button, this is cause the problem

EVALUATION

Run OK and all test cases pass, great!

Alert content: Correct answer
Alert content and timing: Correct answer

Last answer

1	function registerClickHandler() {
2	$ ( '#clickme' ). click ( function ( e ) {
3	setTimeout ( function () {
4	alert ( e . currentTarget . innerHTML );
5	}, 200);
6	});
7	} // inside the timeout handle this is not a button , this is cause the problem
8
9
10

Template

1	function registerClickHandler() {
2	$ ( '#clickme' ). click ( function () {
3	setTimeout ( function () {
4	alert ( this . innerHTML );
5	}, 200);
6	});
7	}

Q: A table containing the en...
A: UPDATE enrollments SET ye...

100%

1min 53sec
(expected 3min)

Easy

MCA

3 points

SQLite Conditions Public

DESCRIPTION

A table containing the enrollment year has incorrect data in records with ids between 20 and 100.

Select all queries below that, for the faulty records, set the year to 2015.

ANSWERCorrect answer | Candidate's selection

  UPDATE enrollments SET year = 2015 WHERE id IN (20, 100);

  UPDATE enrollments SET year = 2015 WHERE id >= 20 AND id <= 100;

  UPDATE enrollments SET year = 2015 WHERE id BETWEEN 20 AND 100;

  UPDATE enrollments SET year = 2015 WHERE id >= 20 OR id <= 100;

Last answer

1	UPDATE enrollments SET year = 2015 WHERE id >= 20 AND id <= 100 ;, UPDATE enrollments SET year = 2015 WHERE id BETWEEN 20 AND 100 ;

Template

1	() UPDATE enrollments SET year = 2015 WHERE id IN ( 20 , 100 );
2	(*) UPDATE enrollments SET year = 2015 WHERE id >= 20 AND id <= 100;
3	(*) UPDATE enrollments SET year = 2015 WHERE id BETWEEN 20 AND 100;
4	() UPDATE enrollments SET year = 2015 WHERE id >= 20 OR id <= 100;