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Graph Algorithm To Find All Connections Between Two Arbitrary Vertices
...a.util.LinkedList;
public class Search {
private static final String START = "B";
private static final String END = "E";
public static void main(String[] args) {
// this graph is directional
Graph graph = new Graph();
graph.addEdge("A", "B");
graph.addE...
Generate list of all possible permutations of a string
...ing individually. (the variable index in the code below keeps track of the start of the last and the next iteration)
Some pseudocode:
list = originalString.split('')
index = (0,0)
list = [""]
for iteration n in 1 to y:
index = (index[1], len(list))
for string s in list.subset(index[0] to end):...
Rotating a two-dimensional array in Python
...ist slicing. This gives you a "sublist" of the original list described by [start:end:step], start is the first element, end is the last element to be used in the sublist. step says take every step'th element from first to last. Omitted start and end means the slice will be the entire list, and the n...
The first day of the current month in php using date_modify as DateTime object
... give the min and max boundaries for time in the month by doing: $monthStart = date('Y-m-01 00:00:00'); $monthEnd = date('Y-m-t 23:59:59');
– H2ONOCK
Jun 9 '15 at 8:15
...
Wrapping a C library in Python: C, Cython or ctypes?
...not do that with ctypes. So you have to switch languages at that point and start rewriting parts of your code, potentially reverse engineering your Python/ctypes code into plain C, thus spoiling the whole benefit of writing your code in plain Python in the first place.
With Cython, OTOH, you're com...
iOS start Background Thread
I have a small sqlitedb in my iOS device. When a user presses a button, I fetch the data from sqlite & show it to user.
5 A...
How can I multiply all items in a list together with Python?
...we're only dealing with primitives here, you can avoid the minor kludge of starting with 1 by starting with list[0] and iterating over list[1:]. Though getting comfortable with the more functional 'reduce' answers here is valuable in the long term as it's also useful in other circumstances.
...
Code for a simple JavaScript countdown timer?
I want to use a simple countdown timer starting at 30 seconds from when the function is run and ending at 0. No milliseconds. How can it be coded?
...
How to get the return value from a thread in python?
...th multiprocessing and the thread pool is that it much slower to setup and start threads compared to the basic threading library. It's great for starting long running threads but defeat the purpose when needing to start a lot of short running threads. The solution of using "threading" and "Queue" d...
Seedable JavaScript random number generator
...just use Math.random() and build helper functions around it (eg. randRange(start, end)).
I'm not sure what RNG you're using, but it's best to know and document it so you're aware of its characteristics and limitations.
Like Starkii said, Mersenne Twister is a good PRNG, but it isn't easy to implem...