day 8: 136-single-number

136-single-number/driver.cpp

@@ -0,0 +1,9 @@
+#include "soln.hpp"
+
+int main()	{
+	vector<int> nums = {1,2,3,4,4,3,1};
+	int answer = 2;
+	Solution soln;
+	cout << "Found single number correctly? " << soln.test(nums, answer) << endl;
+	return 0;
+}

136-single-number/soln.cpp

@@ -0,0 +1,15 @@
+#include "soln.hpp"
+
+int Solution::singleNumber(vector<int> &nums)
+{
+	int uniq = 0;
+	for (int num : nums)
+	{
+		uniq ^= num;
+	}
+	return uniq;
+}
+
+bool Solution::test(vector<int>& nums, int answer)	{
+	return singleNumber(nums) == answer;
+}

136-single-number/soln.hpp

@@ -0,0 +1,9 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+class Solution	{
+	public:
+		int singleNumber(vector<int>& nums);
+		bool test(vector<int>& nums, int answer);
+};