title: what is the meaning of O(1), O(n), O(n*n) memory?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/487258/plain-english-explanation-of-big-o">Plain English explanation of Big O</a>  </p>
  </blockquote>
  
  
  
  <p>Many times when time complexity of a algorithm is talked about, memory also comes into account. I want to know what is the meaning of  big-O(1), big-O(n), big-O(n*n) memory?</p>
  
  <p>And how it is related to time complexity?</p>