Write an efficient program to implement strstr function in C. The strstr() function returns a pointer to the first occurrence of a string in another string. The prototype of the strstr() is: const char* strstr(const char* X, const char* Y); 1. Iterative Implementation Following’s ...
For the purpose of this problem, we will return 0 when needle is an empty string. This is consistent to C’sstrstr() and Java’sindexOf(). strStr() implementation in C++ The implementation should consider the corner cases, when the needle is empty, the result should be always 0. The ...
Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. Update (2014-11-02): The signature of the function had been updated to return theindexinstead of the pointer. If you still see your function signature returns achar *orString, plea...
But yes, any strcmp/strlen style function that uses SSE/AVX/etc. without a buffer size parameter, must first read in smaller units until it gets to a 16/32 byte aligned address, after which it can start using SSE/AVX safely without having to worry about faulting even if it reads past ...
A reference implementation of the algorithm is freely available here.This algorithm is a special case of the Rabin-Karp algorithm for sub-string search which uses a simple sum as rolling hash function.BenchmarksThe algorithm has been benchmarked together with three other algorithms by searching ...
The prototype of thestrstr()function isint strstr(String X, String Y); Practice this problem 1. Iterative Implementation (Naive) Here’s an iterative implementation of thestrstr(X, Y)function. It returns the index of the first occurrence ofYinXor-1ifYis not part ofX. ...