C++ :: Return A Node Using Recursion
Mar 27, 2013
So the task is to find the node with minimum value of a binary tree (not binary search tree). the input is the pointer to the root of the tree. and i cannot make recursion work when i do if conditions. here is what i have Code: /*function 3-takses as input the pointer to the root of the tree and returns a pointer to the node with the minimum value*/
CPPtr minimumvalue(CPPtr SP){
CPPtr min = NULL; //node of minimum value
if(SP== NULL){ // if there is a node, begin comparing
return NULL;
}
else{
if(SP->data<SP->left->data){ //if the node has smaller value than its left child
min = SP; //update node of minimum value
[code].....
no matter where i call my function i get errors like unhandled exception at some memory. how to use recursion in this?
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Mar 28, 2013
So the task is to find the node with minimum value of a binary tree (not binary search tree). the input is the pointer to the root of the tree. and i cannot make recursion work when i do if conditions. here is what i have
CPPtr minimumvalue(CPPtr SP){
CPPtr min = NULL;//node of minimum value
if(SP== NULL){// if there is a node, begin comparing
return NULL;
[Code] ....
No matter where i call my function i get errors like unhandled exception at some memory. How to use recursion in this?
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Aug 12, 2013
I've to use recursion function that return if the string has a same letters:
for example: - fff = true
- fFf = false
I did this but the return answer is always: NOT!
bool iSameLetters(char str[SIZE]) {
if(str[0]=' ')
return true;
else {
if((str[0] && iSameLetters(str+1) == str[0]))
return iSameLetters(str+1);
return false;
}
}
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Apr 7, 2014
In my main I have a do/while loop, which is to iterate around the method calculateImportance while i is not equal to the numNodes.
do
{
int i;
int numNodes = Test.count();
for(i=0; i<=numNodes; i++)
[Code]....
I have been messing around with the data type node, hence why it is there are present, but, that doesn't seem to the answer
This is the function declaration in the header file.
node CalculateImportance();
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Jul 20, 2014
I'm quite new to C and these days I have been playing around with a linked list. I managed to make a working version using pointers, ad only for the sake of learning I was trying to do the same thing just passing the "Object reference" Here is the method that apparently doesn't work..
Code:
struct Node addNode(struct Node head){
int value;
struct Node *n;
printf("Please enter the value
");
scanf("%d", &value);
[Code]...
when I return the function i have something like: head=addNode(head)
Unfortunately it does not work the way I aspect. I suppose that there is something I have left out..
Code:
like n->next=&head
// passing the address of the head at the next pointer of the struct
head =*n
//copy the values of the new node to the old head..
There must be something wrong with this line.. return head; What have I done wrong?
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Apr 22, 2015
I am working on C# Project [Windows Form Application], to update treeview nodes from excelsheet [xls] Cell [row i, Column 3] Values, while on selecting treenode, it should update corresponding Column 4 Value [row i, Column 4]. For me, Treenode are populated successfully, but on selecting the treenode, it always display first Element of treenode [Not selected one].
Populated Treenode from Excel as: [ Update Child Nodes from Column 3 elements [Column 2 Contain Parent node name and Column 3 have Child Node name], if Column 2 Value is same as Parent node name [My Module], update the child nodeunder same Parent node.]
for (int i = 0; i < worksheet.UsedRange.Rows.Count; i++) {
string mynode = ((Excel.Range)worksheet.Cells[i + 1, 3]).Value2.ToString();
string mynode2 = ((Excel.Range)worksheet.Cells[i + 1, 2]).Value2.ToString();
[Code] ....
On selecting the Child Node, it always give 1st Parent node. Instead of Selected Node.
for (int i = 0; i < worksheet.UsedRange.Rows.Count - 2; i++) {
string mynodetext = ((Excel.Range)worksheet.Cells[i + 2, 3]).Value2.ToString();
string mynodetext1 = ((Excel.Range)worksheet.Cells[i + 2, 4]).Value2.ToString();
if (treeView1.SelectedNode.FirstNode.Text == mynodetext) {
this.richTextBox1.SelectedText += Environment.NewLine + mynodetext1 + Environment.NewLine;
}
}
How to get correct selected Node.
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Jul 26, 2014
I'm having a hard time figuring how to get my imagelist index 3 icon to display in the nodes "N1" and "V Speeds" below? So, as you can see in the attachment, the closed folder icon is currently shown which is index 0 in the imagelist. But I want index icon 2 to show in these two nodes.
treeView.BeginUpdate();
treeView.Nodes.Clear();
treeView.Nodes.Add(new TreeNode("Checklist"));
[Code].....
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May 21, 2013
I have a very big xml file. I read it using by xmlReader. I have problem when i reach to next line:
<title>Abasia<nemod>(-astasia) (hysterical)</nemod></title>
How I can read all that content. I have to have next string at the end: "Abasia (-astasia) (hysterical)".
I tried to use ReadElementContentAsString() for all elements, but elements like this has exception, because it has child element.
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Mar 29, 2013
I'm writing some functions pertaining to binary trees. I've used recursion once before while learning quicksort but am still quite new and unfamiliar with it. And this is my first time touching a binary tree. So my question: In my addnode function, will the return root statement at the end ever return a value other than the value passed to the function?
Code:
#include <stdlib.h>
struct tnode
{
int data;
struct tnode * left;
struct tnode * right;
}
[code]....
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Jan 11, 2015
From the page: [URL] ....
#include <iostream>
using namespace std;
int n;
int& test();
[Code] ....
Explanation
In program above, the return type of function test() is int&. Hence this function returns by reference. The return statement is return n; but unlike return by value. This statement doesn't return value of n, instead it returns variable n itself.
Then the variable n is assigned to the left side of code test() = 5; and value of n is displayed.
I don't quite understand the bold sentence. Shouldn't value of n and variable n be the same?
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May 12, 2014
To construct and write down algorithm of determination of the sum of squares of consecutive integers with recursion use. I tried to do something:
public static int RecSumSquare(int x, int n)
{
if (n < 0) throw new ArgumentException("n should be greater than zero");
if (n == 0) return 0;
else return x*x+RecSumSquare(x, n - 1);
}
But I don't know as the beginning and the end of this algorithm will look.
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May 4, 2014
Suppose I'm given the following code:
int mystery(int n){
int something;
if(n > 0)
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Feb 8, 2013
I have this problem set that has to use recursion to permutate scores. I have read in all the numbers and have tested that it works . l have also attached what I have so far. Here is what I think I need to do:I have to pass the structs into this permutation algorithm that is here:
Code:
#include <stdio.h>
void ListPermutations(char str[]);
void RecursivePermute(char str[], int k);
void ExchangeCharacters(char str[], int i, int j);
[Code]....
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Apr 28, 2013
It seems that boost's file recursion requires that the file using the recursion must be in the include path. This makes using file recursion in a library header a problem as libraries may be located in a subdirectory of an include path (which is minor since the programmer can state the subdirectory in the recursive file call as long as it is not relative to the calling file). I also found it a problem when the main compile directory isn't in the compile path.
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Oct 15, 2014
I want to convert the following program into a non-recursive code using a stack and a loop:
void write(int n) {
if (n>0) {
write(n-1);
cout << n << " ";
write(n-1);
}
}
And here is the code I am using but that currently does not work, and I do not know why:
stack<int> S;
S.push(n);
while (not S.empty()) {
int k = S.top();
[Code] .....
How to simulate that recursion. I thought it was enough to push into the stack the equivalent recursive call.
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May 8, 2014
So i have a program it works which takes in a word reverses it prints it out. BUT! the problem is that the program is without recursion. convert the function into recursion.
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
[Code].....
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Oct 20, 2014
I am trying to print an outline. My code works up to a depth of 3. (The depth is the number of subsections - so 3 would be section 1, section 1.A, and section 1.A.1). It also works for a width (number of sections and each type of subsection) of 26, where it is capped. However, to get a larger depth, it would involve many more loops. Not only is that terrible code, it also freezes up the terminal I'm working on. I believe recursion would make it much nicer, but I'm struggling to grasp the idea when using a string (I understand when it is a number).
#include <stdio.h>
int sec(int width, int snum) {
char section[100];
sprintf(section, "Section ");
[Code].....
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Nov 9, 2014
I put some checks in factorial program, I am confused how 27, 40 50 is coming in output and ans is 10.
#include<stdio.h>
int fact(int n) {
if(n==1) {
printf("hello1 %d
",n);
return 1;
[code].....
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Aug 28, 2013
I have a linked list I made and am practicing a simple recursion function sum() which returns the sum of all numbers in each node of the list. Here is my sum() function:
int sum(ListNode *ptr){
if (ptr->next)
return (ptr->num + sum(ptr->next));
else
return(0);
}
where the initial arg passed through the ListNode * parameter is my head node (with null value). The output is fine until that point, then the program locks up and I get the "...has stopped working" error.
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Apr 28, 2014
I have been asked to write three functions for a Liked List that can add remove and reverse the elements of the Linked List. Now, I have done the add function and It is displaying the elements properly using recursion function. But My removal function is not working and I tried all the possible logic I can think of, I dont know, where did I make mistakes.
This is My class for the Linked List
#ifndef __Linked_Lists_Recursive_function_Implementation___NumberList__
#define __Linked_Lists_Recursive_function_Implementation___NumberList__
#include <iostream>
using namespace std;
[Code]....
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Feb 7, 2015
I am trying to input a recursion method. The code compiles, however, it is only giving me a value of 1. I am wanting the value of 5 when it is compiled. Why is this?
#include <iostream>
using namespace std;
int number(int x) {
if (x == 1)
[Code] ....
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Mar 20, 2013
How to print to the screen the value of n after it has been multiplied.
For example: if I use cout << "n: " << n << " power: " << power << "
"; I
can see the variable "power" decrementing by 1, but I don't see the variable "n" incrementing with its new value after it has been multiplied by n * n.
#include <iostream>
using namespace std;
typedef unsigned short int USHORT;
typedef unsigned long int ULONG;
ULONG Getpower(USHORT n, USHORT power);
[Code] .....
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Feb 25, 2013
I'm trying to write a program that converts a decimal number to a binary one. I have most of the program written, but I am having a little bit of trouble. Whenever I enter a decimal number, the program will convert it correctly to binary, however, the last number is not included in the conversion. EX: Converting 37 into binary (0100101) yields 010010 when entered into the program. BTW the program must utilize recursion to achieve this goal.
#include <iostream>
using namespace std;
void decToBinary(int num1);
int main() {
int num1;
[code]....
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Dec 29, 2013
I need to sort an array of n given elements using recursion. What am i doing wrong here?
#include <iostream>
using namespace std;
int i=0, j=1, v[100], n;
[Code].....
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Apr 3, 2013
How do function count factorials in this program?
#include<iostream>
#include<conio.h>
using namespace std;
void main(){
unsigned int factorial(unsigned int value);
[Code] .....
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Oct 23, 2013
write a code that draw a block and diamond each in a single run by using '*' in recursion.
Below are one 10X10 rectangle and 6X4 diamond.
**********
**********
**********
**********
**********
**********
**********
**********
**********
**********
**
* *
* *
* *
* *
* *
* *
* *
**
Note: I couldn't write the diamond here appropriately somehow.
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