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Negative weights using Dijkstra's Algorithm
..., but not all graphs in general. For example, consider this graph:
Assum>me m> the edges are directed from left to right as in your example,
Your algorithm will work as follows:
First, you set d(A) to zero and the other distances to infinity.
You then expand out node A, setting d(B) to 1, d(C) to...
Is storing a delimited list in a database column really that bad?
... example in MySQL:
idlist REGEXP '[[:<:]]2[[:>:]]'*
Hard to count elem>me m>nts in the list, or do other aggregate queries.
Hard to join the values to the lookup table they reference.
Hard to fetch the list in sorted order.
To solve these problems, you have to write tons of application code, reinv...
m>Me m>an per group in a data.fram>me m> [duplicate]
I have a data.fram>me m> and I need to calculate the m>me m>an per group (i.e. per Month , below).
8 Answers
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Why use the params keyword?
...
With params you can call your m>me m>thod like this:
addTwoEach(1, 2, 3, 4, 5);
Without params, you can’t.
Additionally, you can call the m>me m>thod with an array as a param>me m>ter in both cases:
addTwoEach(new int[] { 1, 2, 3, 4, 5 });
That is, params allow...
Android - Using Custom Font
...he res folder. So
assets/fonts
Also make sure that the font ending I m>me m>an the ending of the font file itself is all lower case. In other words it should not be myFont.TTF but myfont.ttf this way must be in lower case
s...
Can som>me m>one explain mappedBy in JPA and Hibernate?
...ects, so that I can traverse from either direction. mappedBy is the recomm>me m>nded way to go about it, however, I couldn't understand it. Can som>me m>one explain:
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StringBuilder vs String concatenation in toString() in Java
Given the 2 toString() implem>me m>ntations below, which one is preferred:
18 Answers
18
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How to tim>me m>out a thread
I want to run a thread for som>me m> fixed amount of tim>me m>. If it is not completed within that tim>me m>, I want to either kill it, throw som>me m> exception, or handle it in som>me m> way. How can it be done?
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How do I efficiently iterate over each entry in a Java Map?
If I have an object implem>me m>nting the Map interface in Java and I wish to iterate over every pair contained within it, what is the most efficient way of going through the map?
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Pythonic way to combine FOR loop and IF statem>me m>nt
I know how to use both for loops and if statem>me m>nts on separate lines, such as:
10 Answers
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