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- string random(int len)
- {
- string a = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
- string r;
- srand(time(NULL));
- for(int i = 0; i < len; i++) r.push_back(a.at(size_t(rand() % 62)));
- return r;
- }
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