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What is better, adjacency lists or adjacency matrices for graph problems in C++?
...^2) memory
It is fast to lookup and check for presence or absence of a specific edge
between any two nodes O(1)
It is slow to iterate over all edges
It is slow to add/delete a node; a complex operation O(n^2)
It is fast to add a new edge O(1)
Adjacency List
Memory usage depends on the number...
Check if a value is in an array (C#)
How do I check if a value is in an array in C#?
10 Answers
10
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How to check if a String contains any of some strings
I want to check if a String s, contains "a" or "b" or "c", in C#.
I am looking for a nicer solution than using
14 Answers
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“To Do” list before publishing Android app to market [closed]
... ready to publish my first app to the Android market, and I'd like to know if any of you have any tips about any experiences you may have encountered in regard to publishing an app that goes beyond the obvious and already documented.
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JavaScript: client-side vs. server-side validation
...rst because you can give better feedback to the average user. For example, if they enter an invalid email address and move to the next field, you can show an error message immediately. That way the user can correct every field before they submit the form.
If you only validate on the server, they ha...
How do I group Windows Form radio buttons?
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@UweB what if I cant add group boxes and panels due to any problem let say I don't have much space on my form. Then?
– Muhammad Saqib
Jan 3 '15 at 10:29
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How to call an external command?
How do you call an external command (as if I'd typed it at the Unix shell or Windows command prompt) from within a Python script?
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How to remove items from a list while iterating?
...terating over a list of tuples in Python, and am attempting to remove them if they meet certain criteria.
26 Answers
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Recommended way to insert elements into map [duplicate]
... is not a recommended way - it is one of the ways to insert into map. The difference with operator[] is that the insert can tell whether the element is inserted into the map. Also, if your class has no default constructor, you are forced to use insert.
operator[] needs the default constructor be...
How can I determine if a String is non-null and not only whitespace in Groovy?
..., which is great, but there doesn't seem to be a good way of determining if a String has something other than just white space in it.
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