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How to reverse a singly linked list using only two pointers?
...out using a third. Simply cast the pointers to a int/long and perform the XOR operation a couple of times. This is one of those C tricks that makes for a fun question, but doesn't have any practical value.
Can you reduce the O(n) complexity? No, not really. Just use a doubly linked list if yo...
What does |= (single pipe equal) and &=(single ampersand equal) mean
...
I think you want to use a XOR instead of an AND for this.
– GameZelda
Aug 4 '11 at 13:59
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Is there XNOR (Logical biconditional) operator in C#?
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XOR = A or B, but Not A & B or neither (Can't be equal [!=])
XNOR is therefore the exact oppoiste, and can be easily represented by == or ===.
However, non-boolean cases present problems, like in this example:
a = 5
b =...
Calculate last day of month in JavaScript
...0 : 31 days
That means you can shift the value 3 places with >> 3, XOR the bits with the original ^ m and see if the result is 1 or 0 in bit position 0 using & 1. Note: It turns out + is slightly faster than XOR (^) and (m >> 3) + m gives the same result in bit 0.
JSPerf results: ...
How can I map True/False to 1/0 in a Pandas DataFrame?
...r: numpy boolean subtract, the -` operator, is deprecated, use the bitwise_xor, the ^ operator, or the logical_xor function instead.` Using @User's answer fixes this.
– Amadou Kone
Mar 13 '19 at 16:01
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Using the field of an object as a generic Dictionary key
...You might want to start with the Equals-Method and then (in GetHashCode()) xor the hash code of every member you compare in Equals.
public class Foo {
public string A;
public string B;
override bool Equals(object other) {
var otherFoo = other as Foo;
if (otherFo...
Merge multiple lines (two blocks) in Vim
...ng block (in the example in the question abc and def) have the same length XOR
the first line of the starting block is the longest, and you don't care about the additional spaces in between) XOR
The first line of the starting block is not the longest, and you additional spaces to the end.
...
Code Golf: Lasers
...ation in the main loop, we update $d if the beam is currently on a mirror. XOR'ing by 3 gives the correct behavior for a \ mirror and XOR'ing by 1 gives the correct behavior for a / mirror.
$d^=3*/\\/+m</>
Next, the current position $r is updated accoring to the current direction.
$r+=(1,-...
Bitwise operation and usage
...wise it's 0.
OR is 1 if one or both of its inputs are 1, otherwise it's 0.
XOR is 1 only if exactly one of its inputs are 1, otherwise it's 0.
NOT is 1 only if its input is 0, otherwise it's 0.
These can often be best shown as truth tables. Input possibilities are on the top and left, the resulta...
Bash if statement with multiple conditions throws an error
...ither or both of its operands are true. You're thinking of "exclusive or" (XOR), which is true if exactly one of its operands is true. (Actually, there are versions of XOR that work on more than 2 operands, in which case it's true if an odd number of operands are true.)
– Gordo...