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028. Implement strStr().md

Implement [strStr()](http://www.cplusplus.com/reference/cstring/strstr/). Return the index of the first occurrence of needle in haystack, or **-1** if needle is not ...
GitHub

28. Implement strStr().cpp

//Runtime: 12 ms, faster than 25.32% of C++ online submissions for Implement strStr(). //Memory Usage: 7 MB, less than 100.00% of C++ online submissions for Implement ...