/C++/All permutations with repetition C++

All permutations with repetition C++

#include <string>
#include <iostream>


void print_str(const char*,std::string,const int, const int);

int main()

{

    int lenght = 2;

    char str[] = {'A', 'B', 'C', 'D'};



    int n = sizeof str;

    print_str(str, "", n, lenght);  //Note: this function works on all cases and not just the case above

    return 0;

}

// The main recursive method to print all possible strings of length "length"
    void print_str(const char str[],std::string prefix,const int n, const int lenght)

    {

        if (lenght == 1)

            {

                for (int j = 0; j < n; j++)

                std::cout << prefix + str[j] << std::endl;

            }//Base case: lenght = 1, print the string "lenght" times + the remaining letter

        else

            {


               // One by one add all characters from "str" and recursively call for "lenght" equals to "lenght"-1
                for (int i = 0; i < n; i++)

                // Next character of input added
                print_str(str, prefix + str[i], n, lenght - 1);
                // "lenght" is decreased, because we have added a new character

            }

    }

Source: stackoverflow.com

Similar codes

0 vote193 views1 answer
Cpp gui
C++
0 vote217 views1 answer
Check if cin got the wrong type
C++
0 vote247 views1 answer
File streams in c++
C++
1 vote231 views1 answer
C++ until
C++
0 vote192 views1 answer
C++ typeid get type name
C++
3 votes183 views1 answer
Abs c++
C++
25 votes224 views5 answers
Getline in c++
C++
0 vote264 views1 answer
Reverse Square Root
C++
0 vote192 views1 answer
Ex: java script
C++
0 vote174 views10 answers
Convert python to c++ online
C++