title: Find unique value in at least two strings
body: <p>if I have 10 different strings and I want to find if at least 2 that contain some value... what would the logic be on that?</p>
  
  <p>all "and's" does not work and neither does all "or's"  </p>
  
  <p>Below won't work...</p>
  
  <p>This will only work if every one has value...</p>
  
  <pre><code>if(str1 &amp;&amp; str2 &amp;&amp; str3 &amp;&amp; str4 &amp;&amp; str5 &amp;&amp; str6 &amp;&amp; str7 &amp;&amp; str8 &amp;&amp; str9 &amp;&amp; str10) 
  </code></pre>
  
  <p>This will be true if there is only one value... needs to be at least 2</p>
  
  <pre><code>if(str1 || str2 || str3 || str4 || str5 || str6 || str7 || str8 || str8 || str10)
  </code></pre>
  
  <p>Is there any easy way to do this?</p>
  
  <p>Edit: More info...</p>
  
  <p>There is going to be ten long strings and I need to chunk through them and check (for instance) if any of the first characters are the same, then check if any of the second characters are the same etc.  but I can add all the extra "charcode at" stuff in later. The same answer will work for checking full length strings and finding if two are the same.</p>