Edit Distance CPP

c++/Edit_distance.cpp

@@ -0,0 +1,45 @@
+#include <bits/stdc++.h>
+using namespace std;
+int minDis(string name1, string name2, int l, int m,
+		vector<vector<int> >& dp)
+{
+
+	if (l == 0)
+		return m;
+
+	if (m == 0)
+		return l;
+
+
+	if (dp[l][m] != -1)
+		return dp[l][m];
+
+
+	if (name1[l - 1] == name2[m - 1]) {
+		return dp[l][m] = minDis(name1, name2, l - 1, m - 1, dp);
+	}
+
+	else {
+		int insert, del, replace;
+
+		insert = minDis(name1, name2, l, m - 1, dp);
+		del = minDis(name1, name2, l - 1, m, dp);
+		replace = minDis(name1, name2, l - 1, m - 1, dp);
+		return dp[l][m] = 1 + min(insert, min(del, replace));
+	}
+}
+
+
+int main()
+{
+
+	string FirstStr1 = "Demon";
+	string SecStr2 = "Stefen";
+
+	int l = FirstStr1.length(), m = SecStr2.length();
+	vector<vector<int> > dp(l + 1, vector<int>(m + 1, -1));
+
+	cout << minDis(FirstStr1, SecStr2, l, m, dp);
+	return 0;
+
+}