From 8f3b0bdab1b090b1472959a4146b29f84c78f2d8 Mon Sep 17 00:00:00 2001
From: Stackingrule <38368554+Stackingrule@users.noreply.github.com>
Date: Thu, 24 Dec 2020 18:32:08 +0800
Subject: [PATCH] feat:add Solution.cpp for 0115. Distinct Subsequences

---
 .../0115.Distinct Subsequences/Solution.cpp        | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 solution/0100-0199/0115.Distinct Subsequences/Solution.cpp

diff --git a/solution/0100-0199/0115.Distinct Subsequences/Solution.cpp b/solution/0100-0199/0115.Distinct Subsequences/Solution.cpp
new file mode 100644
index 0000000000000..a34e169b70e38
--- /dev/null
+++ b/solution/0100-0199/0115.Distinct Subsequences/Solution.cpp	
@@ -0,0 +1,14 @@
+class Solution {
+public:
+    int numDistinct(string s, string t) {
+        int m = s.size(), n = t.size();
+        vector<vector<long>> dp(n + 1, vector<long>(m + 1));
+        for (int j = 0; j <= m; ++j) dp[0][j] = 1;
+        for (int i = 1; i <= n; ++i) {
+            for (int j = 1; j <= m; ++j) {
+                dp[i][j] = dp[i][j - 1] + (t[i - 1] == s[j - 1] ? dp[i - 1][j - 1] : 0);
+            }
+        }
+        return dp[n][m];
+    }
+};
\ No newline at end of file