chore: use iwyu on machine_learning/**.cpp

machine_learning/a_star_search.cpp

@@ -19,15 +19,21 @@
  * values having minimum F(state).
  * @author [Ashish Daulatabad](https://github.com/AshishYUO)
  */
-#include <algorithm>   /// for `std::reverse` function
-#include <array>       /// for `std::array`, representing `EightPuzzle` board
-#include <cassert>     /// for `assert`
-#include <functional>  /// for `std::function` STL
-#include <iostream>    /// for IO operations
-#include <map>         /// for `std::map` STL
-#include <memory>      /// for `std::shared_ptr`
-#include <set>         /// for `std::set` STL
-#include <vector>      /// for `std::vector` STL
+#include <stdint.h>  // for uint32_t, int8_t
+
+#include <algorithm>   // for max, min
+#include <array>       // for array, operator==
+#include <cassert>     // for assert
+#include <cstddef>     // for size_t
+#include <functional>  // for function
+#include <iostream>    // for operator<<, basic_ostream, char_traits, cout
+#include <map>         // for operator!=, map, operator==
+#include <memory>      // for shared_ptr, make_shared, operator!=
+#include <set>         // for set
+#include <tuple>       // for tie, tuple
+#include <utility>     // for pair, move, make_pair, swap
+#include <vector>      // for vector
+
 /**
  * @namespace machine_learning
  * @brief Machine learning algorithms