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Count how many records are in a CSV Python?
...r again (to process the rows, say) then you'll need to reset the iterator, and recreate the reader object: file.seek(0) then fileObject = csv.reader(file)
– KevinTydlacka
Jul 12 '18 at 22:05
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How can I use an array of function pointers?
... @crucifiedsoul "the C Programming Language" written by Brian Kernighan and Dennis Ritchie? It could be, but I didn't have it as a reference at the time I wrote the answer three and an half year ago. So I don't know.
– VonC
Mar 30 '12 at 1:51
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How to read a text file into a string variable and strip newlines?
...a huge PITA in the test/debug process, as it won't clean up the open file handles if you have to terminate prematurely or it runs into an exception.
– GoingTharn
Oct 24 '13 at 20:41
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Do we need semicolon at the end? [duplicate]
...rtion: Everything you need to know outlines the concept well in an understandable manner using examples under the headings:
Where Semicolons are Allowed
Where Semicolons May be Omitted
The rules
It even digs into the official ECMAScript specification about the topic.
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What do all of Scala's symbolic operators mean?
...e method defined on List (though it could be the object of the same name), and :+= is probably the method defined on various Buffer classes.
So, let's see them.
Keywords/reserved symbols
There are some symbols in Scala that are special. Two of them are considered proper keywords, while others are...
Write a program to find 100 largest numbers out of an array of 1 billion numbers
... number in the queue (the head of the queue), remove the head of the queue and add the new number to the queue.
EDIT:
as Dev noted, with a priority queue implemented with a heap, the complexity of insertion to queue is O(logN)
In the worst case you get billionlog2(100) which is better than billion...
Regular expression \p{L} and \p{N}
I am new to regular expressions and have been given the following regular expression:
2 Answers
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design a stack such that getMinimum( ) should be O(1)
...) is still just a peek operation. For example, taking the original version and pushing 1 again, we'd get:
Real stack Min stack
1 --> TOP 1
5 1
1 2
4
6
2
Popping from the above pops from both stac...
Equation (expression) parser with precedence?
...'ve developed an equation parser using a simple stack algorithm that will handle binary (+, -, |, &, *, /, etc) operators, unary (!) operators, and parenthesis.
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Mapping two integers to one, in a unique and deterministic way
Imagine two positive integers A and B. I want to combine these two into a single integer C.
18 Answers
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