diff --git a/Write a program to print all permutations of a given string b/Write a program to print all permutations of a given string
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+// C++ program to print all 
+// permutations with duplicates allowed 
+#include <bits/stdc++.h> 
+using namespace std; 
+
+
+// Function to print permutations of string 
+// This function takes three parameters: 
+// 1. String 
+// 2. Starting index of the string 
+// 3. Ending index of the string. 
+void permute(string a, int l, int r) 
+{ 
+	// Base case 
+	if (l == r) 
+		cout<<a<<endl; 
+	else
+	{ 
+		// Permutations made 
+		for (int i = l; i <= r; i++) 
+		{ 
+
+			// Swapping done 
+			swap(a[l], a[i]); 
+
+			// Recursion called 
+			permute(a, l+1, r); 
+
+			//backtrack 
+			swap(a[l], a[i]); 
+		} 
+	} 
+} 
+
+// Driver Code 
+int main() 
+{ 
+	string str = "ABC"; 
+	int n = str.size(); 
+	permute(str, 0, n-1); 
+	return 0; 
+} 
+
+// This is code is contributed by rathbhupendra