How do you check if two pointers point to the same object?
If two pointers point to non-static data members of the same object with different access control (Clause 11) the result is unspecified. If two pointers point to non-static data members of the …
When subtracting two pointers in C - Stack Overflow
I was playing with pointers in order to fully get the concept and then wanted to subtract two pointers expecting the distance between these two addresses or something, but apparently I …
How to reverse a singly linked list using only two pointers?
Nov 26, 2009 · I wonder if there exists some logic to reverse a singly-linked list using only two pointers. The following is used to reverse the single linked list using three ...
In C, what does a variable declaration with two asterisks (**) mean?
Dec 26, 2010 · I am working with C and I'm a bit rusty. I am aware that * has three uses: Declaring a pointer. Dereferencing a pointer. Multiplication However, what does it mean when …
Is two pointer problem same as sliding window - Stack Overflow
Apr 20, 2021 · In contrast, the two-pointer technique focuses on meeting conditions simultaneously for both pointers within the iterable, disregarding the elements between them. …
Swapping pointers in C (char, int) - Stack Overflow
May 22, 2015 · 5 In C, a string, as you know, is a character pointer (char *). If you want to swap two strings, you're swapping two char pointers, i.e. just two addresses. In order to do any …
Two pointers pattern to solve palindrome problem - Stack Overflow
May 17, 2023 · Can someone please clarify this? I do not understand how two pointers pattern solve palindrome problem is we miss 'e' considering we have this string 'racecar'.
C++ Swapping Pointers - Stack Overflow
Mar 28, 2013 · What you can do is swap the value of two containers that hold the actual addresses - and those are pointers. If you want to swap pointers, you have to create pointer …
Proving that a two-pointer approach works (pair sum)
Jan 30, 2018 · One of the approaches to do the same problem is running two nested for loops, resulting in a complexity of O(n*n). Another way to solve it is using a two-pointer technique. I …
Pointer to 2D arrays in C - Stack Overflow
The semantics are clearer here: *pointer is a 2D array, so you need to access it using (*pointer)[i][j]. Both solutions use the same amount of memory (1 pointer) and will most likely …