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Finding three elements in an array whose sum is closest to a given number
...We've found the answer.
The sum was too small. Move j closer to the end to select the next biggest number.
The sum was too big. Move k closer to the beginning to select the next smallest number.
For each i, the pointers of j and k will gradually get closer to each other. Eventually they will pass ...
Secure random token in Node.js
..."Base 64 Encoding with URL and Filename Safe Alphabet". IMO, replacing the characters is "elegant enough".
– natevw
Oct 7 '13 at 21:58
8
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Passing base64 encoded strings in URL
...ed to url-encode it, since base64 strings can contain the "+", "=" and "/" characters which could alter the meaning of your data - look like a sub-folder.
Valid base64 characters are below.
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=
...
Error: free(): invalid next size (fast):
...
If you are trying to allocate space for an array of pointers, such as
char** my_array_of_strings; // or some array of pointers such as int** or even void**
then you will need to consider word size (8 bytes in a 64-bit system, 4 bytes in a 32-bit system) when allocating space for n pointers. ...
How do I replace a character at a particular index in JavaScript?
I have a string, let's say Hello world and I need to replace the char at index 3. How can I replace a char by specifying a index?
...
Will using 'var' affect performance?
... answered Nov 18 '09 at 14:42
RichardODRichardOD
27.4k88 gold badges5454 silver badges7676 bronze badges
...
Remove spaces from std::string in C++
...ed way to remove spaces from a string in C++? I could loop through all the characters and build a new string, but is there a better way?
...
ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术
...q的头文件
#include <zmq.h>
#include "stdio.h"
int main(int argc, char * argv[])
{
void * pCtx = NULL;
void * pSock = NULL;
const char * pAddr = "tcp://*:7766";
//创建context，zmq的socket 需要在context上进行创建
if((pCtx = zmq_ctx_new()) == NULL)
...
string to string array conversion in java
...
Assuming you really want an array of single-character strings (not a char[] or Character[])
1. Using a regex:
public static String[] singleChars(String s) {
return s.split("(?!^)");
}
The zero width negative lookahead prevents the pattern matching at the start ...
How can I read and parse CSV files in C++?
...0E+09
The code is written as a finite-state machine and is consuming one character at a time. I think it's easier to reason about.
#include <istream>
#include <string>
#include <vector>
enum class CSVState {
UnquotedField,
QuotedField,
QuotedQuote
};
std::vector<...