Python: maximum recursion depth exceeded while calling a Python object
this turns the recursion in to a loop:
algorithm
Algorithms in O(n^2) vs O(n) [duplicate]
What you are asking about is a topic in computer science known as Algorithm Complexity Analysis. It is a very important topic to consider when writing algorithms, or solutions, in your programs because it relates to run-time, or how fast your computations will run. Big-Oh, or O(n) relates to the upper-bound run-time for an algorithm … Read more
Python: maximum recursion depth exceeded while calling a Python object
this turns the recursion in to a loop:
how to implement quick sort algorithm in C++
Your consideration is wrong. The value of r does not change, since it is given as value to the Quicksort function(not a reference). You handle the ranges with p,q such that p is the first index in the range and q the first index not in the range. Thus, your calls were wrong: Here is the complete example. I used std::swap to change elements and ans std::vector … Read more
Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplicate]
Your second example does not work if you send the argument by reference. Did you mean That would work, but an easier way is
What is the difference between tree depth and height?
I learned that depth and height are properties of a node: The depth of a node is the number of edges from the node to the tree’s root node.A root node will have a depth of 0. The height of a node is the number of edges on the longest path from the node to a leaf.A leaf node will have a … Read more
How to generate all permutations of a list?
There’s a function in the standard-library for this: itertools.permutations. If for some reason you want to implement it yourself or are just curious to know how it works, here’s one nice approach, taken from http://code.activestate.com/recipes/252178/: A couple of alternative approaches are listed in the documentation of itertools.permutations. Here’s one: And another, based on itertools.product:
What is Sliding Window Algorithm? Examples?
Generally speaking a sliding window is a sub-list that runs over an underlying collection. I.e., if you have an array like a sliding window of size 3 would run over it like This is useful if you for instance want to compute a running average, or if you want to create a set of all … Read more
What does O(log n) mean exactly?
The most common attributes of logarithmic running-time function are that: the choice of the next element on which to perform some action is one of several possibilities, and only one will need to be chosen. or the elements on which the action is performed are digits of n This is why, for example, looking up … Read more