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Given an array of numbers, return array of products of all other numbers (no division)
... 1, a[0], a[0]*a[1], a[0]*a[1]*a[2], }
{ a[1]*a[2]*a[3], a[2]*a[3], a[3], 1, }
Both of which can be done in O(n) by starting at the left and right edges respectively.
Then multiplying the two arrays element by element gives the required result
My...
Replace only some groups with Regex
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315
A good idea could be to encapsulate everything inside groups, no matter if need to identify th...
What does “SyntaxError: Missing parentheses in call to 'print'” mean in Python?
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This error message means that you are attempting to use Python 3 to follow an example or run a program that uses the Python 2 print statement:
print "Hello, World!"
The statement above does not work in Python 3. In Python 3 you need to add parentheses around the value to be printe...
What do all of Scala's symbolic operators mean?
...
530
I divide the operators, for the purpose of teaching, into four categories:
Keywords/reserved ...
UnboundLocalError on local variable when reassigned after first use
The following code works as expected in both Python 2.5 and 3.0:
12 Answers
12
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When to use ' (or quote) in Lisp?
... passed to it are evaluated. This means you can write this:
(* (+ a 2)
3)
Which in turn evaluates (+ a 2), by evaluating a and 2. The value of the symbol a is looked up in the current variable binding set, and then replaced. Say a is currently bound to the value 3:
(let ((a 3))
(* (+ a 2)
...
Can I zip more than two lists together in Scala?
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36
I don't believe it's possible to generate a list of tuples of arbitrary size, but the transpose...
Why not use Double or Float to represent currency?
...ately represent most simple fractions. For instance, you can't represent 1/3: the decimal representation is repeating (0.3333...), so there is no finite integer that you can multiply by a power of 10 to get 1/3. You could settle on a long sequence of 3's and a small exponent, like 333333333 * 10-10,...
How to find all positions of the maximum value in a list?
...ored in big O
– michaelsnowden
Oct 23 '15 at 8:06
1
Theoretically O(N) and O(2N) are the same but...
How to get the value from the GET parameters?
...ers to JS):
var url_string = "http://www.example.com/t.html?a=1&b=3&c=m2-m3-m4-m5"; //window.location.href
var url = new URL(url_string);
var c = url.searchParams.get("c");
console.log(c);
For older browsers (including Internet Explorer), you can use this polyfill or the cod...