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authorYuqian Yang <crupest@crupest.life>2025-02-12 15:55:21 +0800
committerYuqian Yang <crupest@crupest.life>2025-02-12 16:04:50 +0800
commit77e6cdc863d2cbd9df578a665804daf28d8593fe (patch)
tree62c9f3e071d8d1d6fe125fe801907db11784332e /works/solutions/leetcode/cpp/122.cpp
parent10eb95869601e145b1d8bc909424777c25752d51 (diff)
parenta557fa36a22c5ef4a29da596ee1e3aa10be55984 (diff)
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import(solutions): IMPORT crupest/solutions COMPLETE.
Diffstat (limited to 'works/solutions/leetcode/cpp/122.cpp')
-rw-r--r--works/solutions/leetcode/cpp/122.cpp28
1 files changed, 28 insertions, 0 deletions
diff --git a/works/solutions/leetcode/cpp/122.cpp b/works/solutions/leetcode/cpp/122.cpp
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+++ 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];
+ }
+};