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Test results - Codility L02 PermCheck.html
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<!DOCTYPE html>
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<h4>Session</h4>
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<b>ID:</b> <span id="ticket-id">demoPB2AMU-HMR</span>
</div>
<div id="timelimit-min"><b>Time limit:</b> 120 min.</div>
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<h4 id="ticket-status">
Status: closed
</h4>
<div id="ticket-create-date"><b>Created on:</b> 2014-12-18 06:00 UTC</div>
<div id="ticket-start-date"><b>Started on:</b> 2014-12-18 06:00 UTC</div>
<div id="ticket-end-date"><b>Finished on:</b> 2014-12-18 06:17 UTC</div>
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<h4>Test score</h4>
<div class="help help-total-result" data-hasqtip="3"></div>
<b>100%</b>
<small>
100
out of 100 points
</small>
</div>
<table class="task-scores">
<tbody><tr>
<th class="task-col">Tasks in test</th>
<th class="partial-col">Correctness</th>
<th class="partial-col">Performance</th>
<th class="score-col">Task score</th>
</tr>
<tr>
<td class="task-col difficulty difficulty-1">
<strong>1</strong>
<img src="./Test results - Codility L02 PermCheck_files/icon-type-algo-24.png" title="algo task">
<a href="https://codility.com/demo/results/demoPB2AMU-HMR/#task-0" title="PermCheck">
PermCheck
</a>
</td>
<td class="partial-col">
<div title="good" class="good ">
<div class="progress-bar">
<div class="filled" style="width: 100.00%"></div>
</div>
<span class="number">100%</span>
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<td class="partial-col">
<div title="good" class="good ">
<div class="progress-bar">
<div class="filled" style="width: 100.00%"></div>
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<span class="number">100%</span>
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100%
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The solution is being evaluated.
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<span><span>easy</span></span>
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score:
100 of 100
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<span style="display:none" class="result">100</span>
<span style="display:none" class="max-result">100</span>
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<div class="task-opener">
1.
<a href="https://codility.com/demo/results/demoPB2AMU-HMR/#" id="task-0-name" class="task-opener">PermCheck</a>
</div>
<span class="task-synopsis">
Check whether array A is a permutation.
</span>
</div>
</div>
<div class="task-details task-0-details" style="display: block">
<table class="task-details-table">
<tbody><tr valign="top">
<td class="description-column">
<div class="hdr hdr-dark">Task description</div>
<div id="task-0-text">
<div id="brinza-task-description">
<p>A non-empty zero-indexed array A consisting of N integers is given.</p>
<p>A <i>permutation</i> is a sequence containing each element from 1 to N once, and only once.</p>
<p>For example, array A such that:</p>
<p></p><pre><tt> A[0] = 4
A[1] = 1
A[2] = 3
A[3] = 2</tt></pre>
<p>is a permutation, but array A such that:</p>
<p></p><pre><tt> A[0] = 4
A[1] = 1
A[2] = 3</tt></pre>
<p>is not a permutation, because value 2 is missing.</p>
<p>The goal is to check whether array A is a permutation.</p>
<p>Write a function:</p>
<blockquote><p class="lang-c" style="font-family: monospace; font-size: 9pt; display: none"><tt>
int solution(int A[], int N);
</tt></p></blockquote>
<blockquote><p class="lang-cpp" style="font-family: monospace; font-size: 9pt; display: none"><tt>
int solution(vector<int> &A);
</tt></p></blockquote>
<blockquote><p class="lang-pas" style="font-family: monospace; font-size: 9pt; display: none"><tt>
function solution(A: array of longint; N: longint): longint;
</tt></p></blockquote>
<blockquote><p class="lang-java" style="font-family: monospace; font-size: 9pt; display: none"><tt>
class Solution { public int solution(int[] A); }
</tt></p></blockquote>
<blockquote><p class="lang-py" style="font-family: monospace; font-size: 9pt; display: none"><tt>
def solution(A)
</tt></p></blockquote>
<blockquote><p class="lang-php" style="font-family: monospace; font-size: 9pt; display: none"><tt>
function solution($A);
</tt></p></blockquote>
<blockquote><p class="lang-cs" style="font-family: monospace; font-size: 9pt; display: block"><tt>
class Solution { public int solution(int[] A); }
</tt></p></blockquote>
<blockquote><p class="lang-js" style="font-family: monospace; font-size: 9pt; display: none"><tt>
function solution(A);
</tt></p></blockquote>
<blockquote><p class="lang-pl" style="font-family: monospace; font-size: 9pt; display: none"><tt>
sub solution { my (@A)=@_; ... }
</tt></p></blockquote>
<blockquote><p class="lang-rb" style="font-family: monospace; font-size: 9pt; display: none"><tt>
def solution(a)
</tt></p></blockquote>
<blockquote><p class="lang-vb" style="font-family: monospace; font-size: 9pt; display: none"><tt>
Private Function solution(A As Integer()) As Integer
</tt></p></blockquote>
<blockquote><p class="lang-lua" style="font-family: monospace; font-size: 9pt; display: none"><tt>
function solution(A)
</tt></p></blockquote>
<blockquote><p class="lang-m" style="font-family: monospace; font-size: 9pt; display: none"><tt>
int solution(NSMutableArray *A);
</tt></p></blockquote>
<blockquote><p class="lang-scala" style="font-family: monospace; font-size: 9pt; display: none"><tt>
object Solution { def solution(A: Array[Int]): Int }
</tt></p></blockquote>
<blockquote><p class="lang-go" style="font-family: monospace; font-size: 9pt; display: none"><tt>
func Solution(A []int) int
</tt></p></blockquote>
<p>that, given a zero-indexed array A, returns 1 if array A is a permutation and 0 if it is not.</p>
<p>For example, given array A such that:</p>
<p></p><pre><tt> A[0] = 4
A[1] = 1
A[2] = 3
A[3] = 2</tt></pre>
<p>the function should return 1.</p>
<p>Given array A such that:</p>
<p></p><pre><tt> A[0] = 4
A[1] = 1
A[2] = 3</tt></pre>
<p>the function should return 0.</p>
<p>Assume that:</p>
<blockquote><ul style="margin: 10px;padding: 0px;"><li>N is an integer within the range [<span class="number">1</span>..<span class="number">100,000</span>];</li>
<li>each element of array A is an integer within the range [<span class="number">1</span>..<span class="number">1,000,000,000</span>].</li>
</ul>
</blockquote><p>Complexity:</p>
<blockquote><ul style="margin: 10px;padding: 0px;"><li>expected worst-case time complexity is O(N);</li>
<li>expected worst-case space complexity is O(N), beyond input storage (not counting the storage required for input arguments).</li>
</ul>
</blockquote><p>Elements of input arrays can be modified.</p>
</div>
<div style="margin-top:5px">
<small>Copyright 2009–2014 by Codility Limited. All Rights Reserved. Unauthorized copying, publication or disclosure prohibited.</small>
</div>
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<div class="hdr hdr-dark" style="position:relative">
Solution
<div style="position:absolute;right:10px;top:4px;">
</div>
</div>
<div class="hdr">
<b>Programming language used:</b> <span class="language_used" style="font-weight: normal">C#</span>
</div>
<div class="hdr">
<div class="help help-total-time" data-hasqtip="0"></div>
<b>Total time used: 18 minutes</b>
</div>
<div class="hdr">
<div class="help help-effective-time" data-hasqtip="1"></div>
<b>Effective time used: 18 minutes</b>
</div>
<div class="hdr">
<span class="left">Notes: </span>
<div id="sol-desc-0-container">
<div id="sol-desc-0" style="display:block; text-align : left;">
<span class="value user_notes_right" style="font-weight:normal">
<i>not defined yet</i>
</span>
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Code: 06:17:57 UTC,
cs,
final,
score: <strong>100.00</strong>
</div>
<div class="solution-sourcecode-print white">
<div class="line-numbers">
<a>1</a><a>2</a><a>3</a><a>4</a><a>5</a><a>6</a><a>7</a><a>8</a><a>9</a><a>10</a><a>11</a><a>12</a><a>13</a><a>14</a><a>15</a><a>16</a><a>17</a><a>18</a><a>19</a><a>20</a><a>21</a><a>22</a><a>23</a><a>24</a><a>25</a><a>26</a><a>27</a><a>28</a><a>29</a><a>30</a><a>31</a><a>32</a><a>33</a><a>34</a>
</div>
<div class="code-highlight">
<pre id="code-0-49"><code data-prg-lang="cs" class="language-cs hljs"><span class="line "><span class="hljs-keyword">using</span> System;</span>
<span class="line "><span class="hljs-comment">// you can also use other imports, for example:</span></span>
<span class="line "><span class="hljs-comment">// using System.Collections.Generic;</span></span>
<span class="line "></span>
<span class="line "><span class="hljs-comment">// you can use Console.WriteLine for debugging purposes, e.g.</span></span>
<span class="line "><span class="hljs-comment">// Console.WriteLine("this is a debug message");</span></span>
<span class="line "></span>
<span class="line "><span class="hljs-keyword">class</span> <span class="hljs-title">Solution</span> {</span>
<span class="line "> <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">int</span> <span class="hljs-title">solution</span><span class="hljs-params">(<span class="hljs-keyword">int</span>[] A)</span> </span>{</span>
<span class="line "> </span>
<span class="line "> <span class="hljs-keyword">int</span> n = A.Length;</span>
<span class="line "> </span>
<span class="line "> <span class="hljs-keyword">int</span>[] AC = <span class="hljs-keyword">new</span> <span class="hljs-keyword">int</span>[n]; <span class="hljs-comment">// array counter</span></span>
<span class="line "> </span>
<span class="line "> <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = <span class="hljs-number">0</span>; i < n; i++)</span>
<span class="line "> {</span>
<span class="line "> AC[i] = <span class="hljs-number">0</span>;</span>
<span class="line "> }</span>
<span class="line "> </span>
<span class="line "> <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = <span class="hljs-number">0</span>; i < n; i++)</span>
<span class="line "> {</span>
<span class="line "> <span class="hljs-keyword">if</span> (A[i] - <span class="hljs-number">1</span> < A.Length && A[i] - <span class="hljs-number">1</span> >= <span class="hljs-number">0</span> && AC[A[i] - <span class="hljs-number">1</span>] != <span class="hljs-number">1</span>) </span>
<span class="line "> AC[A[i] - <span class="hljs-number">1</span>] = <span class="hljs-number">1</span>;</span>
<span class="line "> <span class="hljs-keyword">else</span> <span class="hljs-comment">// if array contains 0 or negative or number larger than the length, or if duplicate is already found, then theres this array is not permutation.</span></span>
<span class="line "> <span class="hljs-keyword">return</span> <span class="hljs-number">0</span>;</span>
<span class="line "> }</span>
<span class="line "> </span>
<span class="line "> <span class="hljs-comment">// if above test passes then its solution</span></span>
<span class="line "> </span>
<span class="line "> <span class="hljs-keyword">return</span> <span class="hljs-number">1</span>;</span>
<span class="line "> </span>
<span class="line "> <span class="hljs-comment">// write your code in C# 5.0 with .NET 4.5 (Mono)</span></span>
<span class="line "> }</span>
<span class="line ">}</span>
<span class="line "></span></code></pre>
</div>
</div>
</div>
<div class="analysis">
<div class="hdr hdr-dark">
<div class="help help-analysis" data-hasqtip="37"></div>
Analysis
<div class="clr"></div>
</div>
<div class="hdr detected-time-print">
Detected time complexity:<br><b style="font-size: 200%">O(N * log(N)) or O(N)</b>
</div>
<table class="tests-table">
<thead>
<tr>
<th>test</th>
<th>time</th>
<th class="plot-header"></th>
<th colspan="2">result</th>
</tr>
</thead>
<thead>
<tr>
<th class="group example" colspan="4">Example tests</th>
</tr>
</thead>
<tbody>
<tr>
<td>
example1
<br>
<small>the first example test</small>
</td>
<td align="right">0.072 s</td>
<td colspan=" 2 ">
<b>OK</b>
</td>
</tr>
<tr>
<td>
example2
<br>
<small>the second example test</small>
</td>
<td align="right">0.068 s</td>
<td colspan=" 2 ">
<b>OK</b>
</td>
</tr>
</tbody>
<thead>
<tr>
<th class="group func" colspan="4">Correctness tests</th>
</tr>
</thead>
<tbody>
<tr>
<td>
extreme_min_max
<br>
<small>single element with minimal/maximal value</small>
</td>
<td align="right">0.064 s</td>
<td colspan=" 2 ">
<b>OK</b>
</td>
</tr>
<tr>
<td>
single
<br>
<small>single element</small>
</td>
<td align="right">0.068 s</td>
<td colspan=" 2 ">
<b>OK</b>
</td>
</tr>
<tr>
<td>
double
<br>
<small>two elements</small>
</td>
<td align="right">0.076 s</td>
<td colspan=" 2 ">
<b>OK</b>
</td>
</tr>
<tr>
<td>
antiSum1
<br>
<small>total sum is correct, but it is not a permutation, N <= 10</small>
</td>
<td align="right">0.068 s</td>
<td colspan=" 2 ">
<b>OK</b>
</td>
</tr>
<tr>
<td>
small_permutation
<br>
<small>permutation + one element occurs twice, N = ~100</small>
</td>
<td align="right">0.068 s</td>
<td colspan=" 2 ">
<b>OK</b>
</td>
</tr>
</tbody>