First clear solution for Even the Last by mehWincenty - python coding challenges

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First solution in Clear category for Even the Last by mehWincenty

def checkio(array):
    
    if len(array)==0:
        return 0
    c=0
    i=0
    while i
                        Oct. 21, 2016

                        
                            Comments:
                            
                                
                                    danleonard
 on Aug. 20, 2019, 4:12 p.m.

                                    <p>I like the i+=2 part. Don't have to check if even that way.</p>

                                
                            
                                
                                    netDrewid
 on Jan. 7, 2021, 10:01 p.m.

                                    <p>Agreed. Very simple and clean.</p>

                                
                            
                                
                                    pokryshkin
 on May 29, 2021, 1:49 p.m.

                                    <p>instead of</p>

<pre class='brush: python'>    c, i = 0, 0
    while i&lt;len(array):
    c+=array[i]
    i+=2
</pre>

<p>You can use something like</p>

<pre class='brush: python'>с = sum((array[i] for i in range(0,len(array),2)))
</pre>

                                
                            
                                
                                    alterGNU
 on June 13, 2021, 1:16 a.m.

                                    <p>Hi^^ nicely done!</p>

<p>As @pokryshkin said, you can use the <pre class='brush: python'>sum()</pre> function^^:
<pre class='brush: python'>
checkio = lambda a: sum(a[::2])*a[-1] if len(a)!=0 else 0
</pre>
Here <pre class='brush: python'>sum(a[::2])</pre> replace the line 5to9 and <pre class='brush: python'>a[-1]</pre> == <pre class='brush: python'>a[len(a)-1]</pre> :)</p>

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