Initial commit of code for dopelib, and ch 1, 2, and 12

libs/chapter1/chapter1.hpp

@@ -0,0 +1,6 @@
+#pragma once
+
+#include <stdlib.h>
+
+bool IsUnique(const char* s, int len);
+bool CheckPermutation(const char* s1, const char* s2, size_t s1_len, size_t s2_len);