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The preorder of the binary tree traverses, do not understand what this question let me return (C language), cPP I do the opposite
binary tree preorder traversal
**
* Definition for a binary tree node.
* struct TreeNode {
* int val;
* struct TreeNode *left;
* struct TreeNode *right;
* };
*
**
* Return an array of size *returnSize.
* Note: The returned arr...
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Code interpretation of programming problems
pairs of positive integers (xpeny), the remainder of xrecery y is greater than or equal to k, the input is nmemery k, and the output is how many, for example, input 52, output 7, logarithms are (2magin3) (2magin4) (2mem5) (3pyrr5) (4preline 5) (5pc5), t...
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In logical calculation, how to encounter true retention and false inversion?
for example, if there are two Boolean variables amenb, respectively, when b=true returns acentrology false, it returns! a, how to implement it with simple operation? how should I write a xxx b xxx?
is actually a question of how to: true true f...
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Tetris problem
the map of Tetris is implemented in a two-dimensional array, and squares are also implemented in arrays, but I just don t understand how maps interact with squares.
is how to know where the square is on the map. Besides, although the two-dimensional ...
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Message format of tcp
this is the format of tcp messages on the Internet and in books. I just want to ask, is it the same in actual transmission? For example, the first part of tcp, with a total of 6 segments from top to bottom, is also juxtaposed with 6 segments during t...
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Cut the rope, cut the rope of length n into m segments, and find the maximum value of the length product of each segment (mforce n is an integer)
cut the rope, cut the rope of length n into m segments, and find the maximum value of the length product of each segment I would like to ask myself what is the idea of typing n and m ....
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One-dimensional closest point crashes too much data
< H1 > include < iostream > < H1 >
< H1 > include < time.h > < H1 >
< H1 > include < stdlib.h > < H1 >
< H1 > include < math.h > < H1 >
using namespace std; problem: partition function does not work effectively; typedef double Type; typed...
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In MFC development, how to change the picture content of pictureBox by clicking a button?
in MFC development, how to change the picture content of pictureBox by clicking a button?
this property in pictureBOX:
how to add code to the button to make pictureBOX load another picture when you click the button, thank you!
...
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In MFC development, how to switch tabControl pages with a button?
in MFC development, how to switch tabControl pages with a button?
for example, in C-sharp, you can click the button to switch pages by adding the following statement to the button:
this.tabControl1.SelectedIndex = 2;
but only these two attributes ...
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C language self-learning, how to jump and implement?
when I read a book, I write the following code and type .
-sharpinclude<stdio.h>
-sharpinclude<stdlib.h>
*acb*
void butler(void);
int main()
{
printf("a"); a
butler(); void butler
printf("b"); b
return 0;
...
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Ask everyone to help write a rule?
the original rule is as follows [1-9] {1} [0-9] {3} now I want to rule out the result of 2035. How do I write it? because I m in a hurry, I can t think for myself. Regularity is my weakness. Thank you! ...
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How to understand static void * a = & a;?
how to understand this line of code?
static void * a = &a;
I saw it on the source code of AFN.
static void *AFHTTPRequestSerializerObserverContext = &AFHTTPRequestSerializerObserverContext;
The AFURLRequestSerialization.h file is used wh...
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My side of the project code is UTF-8, nearly 2 days before the launch of the customer said that the assigned database is GBK, and the database code can not be changed, is there any solution?
big head. ...
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The TEXT () macro in vs reported an error, and the real parameters of the "const wchar_t *" type are incompatible with the formal parameters of the "TCHAR *" type. What should I do?
this is from https: msdn.microsoft.com en., I also use the unicode character set, ask for help!
...
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Calculating the length of three sides of a right triangle by knowing the radius of the inner tangent circle in C language
-sharpinclude<stdio.h>
-sharpinclude<math.h>
void solve(int r)
{
for(int a =2*r;a <80; a PP)
{
for(int b = a;b < 900; bPP)
{
int c=a*a+b*b;
if( fabs( sqrt(c) - (int) sqrt(c) ) < 1e-8)...
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The problem of playing multi-audio with FFmpeg + SDL
requirements: play two audio files at the same time (duration: one long and one short). Playback requirements: as shown in the figure:
Audio file 1 plays normally, and the total length of the file is greater than the set playback duration
Audio...
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When GCC compiles, undefined reference to appears
1. Under folder A, there is a folder B 2. Generate static libraries in folder B, assuming that the ld.a, source code is written in C 3. The .CPP file in folder A, a function that references the source code in folder B, and links to the static library ...
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What is the difference between iPP and iTunes 1 when using the comparison operator in CPP?
this is the insert function of the array linear table written in CPP. In the second if condition, there is no problem if you use listSize+1, but there is an error (non-compilation error) if you execute the listSizePP program .
void insert(int location, ...
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How to convert YUV420 data to CMSampleBuffer? of kCVPixelFormatType_32BGRA
the YUV420 data is obtained by pulling the data. How to transfer the CMSampleBuffer, that needs to be converted to kCVPixelFormatType_32BGRA? ...
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Encapsulation of CPP singleton mode
when learning the reactor model today, I referred to the code written by others. reference blog address: https: blog.csdn.net u011693.
the following are the questions to be asked:
1.reactorreactor_impl
2.reactor
CPP rookie, also hope to be able t...