Create RemoveChar.cpp

Cpp/RemoveChar.cpp

@@ -0,0 +1,60 @@
+// C++ program to remove duplicates, the order of
+// characters is not maintained in this progress
+#include <bits/stdc++.h>
+#define NO_OF_CHAR 256
+using namespace std;
+
+int* getcountarray(string str2)
+{
+	int* count = (int*)calloc(sizeof(int), NO_OF_CHAR);
+
+	for (int i = 0; i < str2.size(); i++)
+	{
+		count[str2[i]]++;
+	}
+
+	return count;
+}
+
+/* removeDirtyChars takes two
+string as arguments: First
+string (str1) is the one from
+where function removes dirty
+characters. Second string(str2)
+is the string which contain
+all dirty characters which need
+to be removed from first
+string */
+string removeDirtyChars(string str1, string str2)
+{
+	// str2 is the string
+	// which is to be removed
+	int* count = getcountarray(str2);
+	string res;
+
+	// ip_idx helps to keep
+	// track of the first string
+	int ip_idx = 0;
+
+	while (ip_idx < str1.size())
+	{
+		char temp = str1[ip_idx];
+		if (count[temp] == 0)
+		{
+			res.push_back(temp);
+		}
+		ip_idx++;
+	}
+
+	return res;
+}
+
+// Driver Code
+int main()
+{
+	string str1 = "geeksforgeeks";
+	string str2 = "mask";
+
+	// Function call
+	cout << removeDirtyChars(str1, str2) << endl;
+}