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The C Programming Language ¾­µä´úÂë any(s1,s2)

/*
* Exercise 2-5 Page 48
*
* Write the function any(s1,s2), which returns the first location
* in the string s1 where any character from the string s2 occurs,
* or -1 if s1 contains no characters from s2. (The standard library
* function strpbrk does the same job but returns a pointer to the
* location.)
 
*
*/
Here's a much better solution, by Partha Seetala. This solution has a worst-
case time complexity of only O(n + m) which is considerably better.


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vim stash.h
#ifndef STASH_H
#define STASH_H
typedef struct STASHTag {
  int size;  /* Size of each space */
  int quantity; /* Number of storage spaces */
  int next; /* Next empty space */
  /* Dynamically allocated array of bytes: */
  unsigned char* ......

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  ´Ó³¤Ô¶½Ç¶È¿´£ºC++±ÈCÓïÑÔÓÐןü¼Ó¹ãÀ«µÄǰ¾°£»¶øCÓïÑÔ¶ÔÓÚÉÏ»ú¿¼ÊÔ ºÃÈÝÒ×ÉÏÊÖ£¡
ÓôÃÆ¡£¡£¡£¡£¡£¡£ ......

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ÉùÃ÷Ö¸Õ룺 char* pc;
ÉùÃ÷ÒýÓ㺠char c = 'A'
                  char& rc = c;
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2 Îļþ½á¹¹
2.1 ΪÁ˸üºÃµÄÀûÓÃCVSµÄÐ޸ļǼ¹¦ÄÜ£¬ÔÚcommitµÄʱºò£¬ÈÏÕæµÄÌîдÐ޸ļǼ¡£
2.2 Ϊ·ÀֹͷÎļþ±»Öظ´ÒýÓã¬Ó¦µ±ÓÃifndef/define/endif½á¹¹²úÉúÔ¤´¦Àí¿é£»
2.3 ʹÓÃ__cplusplusºê¶¨Ò壬ʹ³ÌÐò¿ÉÒÔ·½±ãµÄÒÆÖ²ÖÁC++»·¾³Ï£»
2.4 Óà #include ¸ñʽÀ´ÒýÓñê×¼¿âµÄÍ·Îļþ£¨±àÒëÆ÷½«´Ó±ê×¼¿âĿ¼¿ªÊ ......

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#include <stdio.h>
void *max(void *base, unsigned int nmemb, unsigned int size,
    int (*compar)(const void *, const void *))
{
    int i;
    void* max_data = base;
    char* tmp = base;
 &nbs ......
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