On Fri, 04 Jan 2008 09:29:50 -0800, bukzor wrote: > Why cant you implement < for complex numbers? Maybe I'm being naive, but > isn't this the normal definition? > a + bi < c + di iff sqrt(a**2 + b**2) < sqrt(c**2, d**2)
No, it is not. Ordered comparisons are not defined for complex numbers. Which is bigger, 4+2j or 2+4j? > How do you implement a set without sorting? With a hash table. Or if you are willing to limit yourself to sets of small integers, you can implement it using bit flipping. E.g. 5 is an element of the set if bit 5 is on. > Are you expecting better than O(log n)? Sure. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
