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Type: Posts; User: budala

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  1. Print all nodes of the same level from binary tree

    This is the scenario:

    1. user inputs an int N for the desired level
    2. if N is greater than the total number of levels in the tree, repeat input
    3. if N is less than 0, repeat input
    4. if N is...
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    I'm sorry but I can't build a matrix with a large...

    I'm sorry but I can't build a matrix with a large enough number of rows, because the rows should grow dynamically :(
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    how do i insert a row into a matrix?

    I start with a matrix which has 10 columns and just one row, and I would like to add a seccond row below that one if the elements in the first row satisfy a certain property, add a third if the...
  4. got it!

    got it!
  5. I think I didn't make my self clear. When I said...

    I think I didn't make my self clear. When I said "end" i thought "after the last node in the list" or more precisely "before the beginning in the list"
  6. add to the beginning of a circular (singly) linked list

    Hi there. Long time no read :)

    I have a problem with my circular list. I can add a node to the end of the list just fine, but I can't seem to add it to the beginning.

    This is (sort of a...
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    dang nabbit :D

    dang nabbit :D
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    yes i did read it and thats what led me to...

    yes i did read it and thats what led me to believe that instead of remembering to free everything I could use alloca
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    @Salem - did I then misunderstand the purpose of...

    @Salem - did I then misunderstand the purpose of alloca? Is it not suppose to do the allocating and freeing of memory instead of ... Me? :D
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    When I input name: "abc", age: "20", id: "1" the...

    When I input name: "abc", age: "20", id: "1" the printout function returns this to the screen

    NAME: ????!?!? AGE: 1832928 ID: 29382235
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    alloca() function

    I would like to dynamically allocate memory for nodes in a linked list. I used to use malloc() and free() afterwards, but heard lately that it's simpler (with certain limitations like running out of...
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    I would like to avoid hashing. Not that I'm...

    I would like to avoid hashing. Not that I'm affraid of it, just want to do it the "normal" way using only that one linked list ;)
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    Mass deletion from linked list

    How would one go about deleting every single person (node) from a singly linked list which has the name Jack?

    i.e.

    Start:


    Jack -> John -> Ann -> Bill -> Jack -> Jack -> Frank -> Jack
    ...
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    that's exactly that! I figured out that my logic...

    that's exactly that! I figured out that my logic is flawed in that respect ;)
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    That's what happens when you replace with...

    That's what happens when you replace with copy/paste, and then add some more code whilst forgetting to replace it also :D

    Anyways, replaced the idioms in my native language with english ones, and...
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    Sort linked list by pointer manipulation

    Hi there, long time no bother :D

    I am trying to sort a singly linked list using pointer manipulation using a "selection sort"-ish algorithm and I'm having problems.

    My idea is this:

    1....
  17. solved it. trivial really but not a couple of...

    solved it. trivial really but not a couple of hours ago :D

    one simply needs to keep track of the element from which we are using the desired field for comparison. I called it element x :D


    int...
  18. Insertion sort - sort an array of structs using a single field

    I have an array of structs
    typedef struct node
    {
    int a,b,c,d;
    } element;

    ...

    element array[5];
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    bubble sort directional problems

    I want to sort an array using bubble sort. I know it's the slowest but i have only 5-10 elements so it's fast enough. My algorithm for bubble sort works cause if I code this


    void Bubble(int...
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    since an array of chars is basically a string,...

    since an array of chars is basically a string, why not try this...




    #include <stdio.h>
    #include <string.h>
    #include <ctype.h>

    int main (int argc, const char * argv[])
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    Of course, but apart from that, if the user...

    Of course, but apart from that, if the user ALWAYS enters less than 20 characters, is it ok?
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    returning a string from a function

    is anything wrong with this approach?


    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>

    void str_output(char *x)
    {
    scanf("%s", x);
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    I guess I could/should have included a break in...

    I guess I could/should have included a break in the for loop after it finds the sought node :)
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    I wasn't expecting for all my problems to be...

    I wasn't expecting for all my problems to be solved. The fact that on this forum one doesn't get the code wrapped up in shiny paper is a great plus for me as it is more important to realise why...
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    Nope, still doesn't work! It doesn't delete the...

    Nope, still doesn't work! It doesn't delete the node i want when it does exist, but it does return 0 when i try to delete a non-existing node.

    I colored the new lines of code red


    int...
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