<tr><td><code>d[k] = v</code></td><td>Insert or replace</td><td>No error</td><td>None</td></tr> <tr><td><code>d.get(k)</code></td><td>Safe lookup</td><td><code>None ...
Big O - upper bound Big Omega - lower bound Big Theta - upper and lower bound - that's what's usually used but called Big O. An ArrayList is implemented with an array. When the array hits capacity, ...