import(solutions): Move leetcode solutions to subdir.

1 files changed, 28 insertions, 0 deletions

diff --git a/works/solutions/leetcode/cpp/122.cpp b/works/solutions/leetcode/cpp/122.cpp
new file mode 100644
index 0000000..68cd278
--- /dev/null
+++ b/works/solutions/leetcode/cpp/122.cpp
@@ -0,0 +1,28 @@
+#include <vector>

+

+using std::vector;

+

+class Solution

+{

+public:

+    int maxProfit(vector<int> &prices)

+    {

+        if (prices.size() <= 1)

+            return 0;

+

+        int day_count = prices.size();

+

+        vector<vector<int>> dp(day_count, std::vector<int>(2));

+

+        dp[0][0] = 0;

+        dp[0][1] = -prices[0];

+

+        for (int i = 1; i < day_count; i++)

+        {

+            dp[i][0] = std::max(dp[i - 1][0], dp[i - 1][1] + prices[i]);

+            dp[i][1] = std::max(dp[i - 1][1], dp[i - 1][0] - prices[i]);

+        }

+

+        return dp[day_count - 1][0];

+    }

+};