Create solution.cpp

Author: wlgq2

169. majority_element/solution.cpp

@@ -0,0 +1,22 @@
+class Solution 
+{
+public:
+    int majorityElement(vector<int>& nums) 
+    {
+        int num;
+        int cnt = 0;
+        for (int i = 0;i < nums.size();i++)
+        {
+            if (cnt == 0)
+            {
+                num = nums[i];
+                cnt++;
+            }
+            else
+            {
+                cnt += (num == nums[i]) ? 1 : -1;
+            }
+        }
+        return num;
+    }
+};