Jingyi Zhang ivycheung1208

## 9_9.cpp
/* CC150 9.9 */
// n queens

#include <iostream>
#include <vector>

using namespace std;

bool checkValid(vector<int> columns, int row) // return true if placement on (row) is valid
{

## 5_3.cpp
/* CC150 5.3
 * Given a positive integer, print the next smallest and the next largest number that have the same number of
 * 1 bits in their binary representation.
 */

#include <iostream>

using namespace std;

unsigned int reverse(unsigned int num, int k); // reverse from LSB through the kth bit, k < BIT_SIZE
	/* CC150 9.9 */
	// n queens

	#include <iostream>
	#include <vector>

	using namespace std;

	bool checkValid(vector<int> columns, int row) // return true if placement on (row) is valid
	{
	/* CC150 5.3
	* Given a positive integer, print the next smallest and the next largest number that have the same number of
	* 1 bits in their binary representation.
	*/

	#include <iostream>

	using namespace std;

	unsigned int reverse(unsigned int num, int k); // reverse from LSB through the kth bit, k < BIT_SIZE